Latest Articles from ZooKeys Latest 100 Articles from ZooKeys https://zookeys.pensoft.net/ Thu, 28 Mar 2024 12:02:01 +0200 Pensoft FeedCreator https://zookeys.pensoft.net/i/logo.jpg Latest Articles from ZooKeys https://zookeys.pensoft.net/ Three new species and one new record of Deimatidae (Echinodermata, Holothuroidea, Synallactida) discovered in the South China Sea and the Mariana fore-arc area using integrative taxonomic methods https://zookeys.pensoft.net/article/115913/ ZooKeys 1195: 309-335

DOI: 10.3897/zookeys.1195.115913

Authors: Yunlu Xiao, Haibin Zhang

Abstract: Deep-sea holothurian specimens were collected during five scientific expeditions (2018–2023) using the submersible vehicle ‘Shenhaiyongshi’. Our examination of specimens of Deimatidae from the South China Sea and the Mariana fore-arc area revealed three new species, which were described as Oneirophanta idsseica sp. nov., Oneirophanta brunneannulata sp. nov., and Oneirophanta lucerna sp. nov. These species were distinguished from each other and from congeners by the arrangement, and number of ventrolateral tube feet and ossicle types. We also reported Oneirophanta mutabilis mutabilis Théel, 1879 for the first time from the Mariana fore-arc area, and we recorded Deima validum validum for the second time from the South China Sea. The taxonomy of these new species and new records is discussed, and a phylogenetic analysis based on a concatenated dataset of 16S and COI genes was conducted. Additionally, the inter- and intraspecific genetic divergences we calculated among deimatid species. The results support the assignment of these new species to the genus Oneirophanta and their separation from congeners. A description of the main morphological characters of Oneirophanta species is also provided. The data were collected from geographically diverse areas and suggest that species of Deimatidae were abundant in the Pacific Ocean and occupied a wide range of depths.

HTML

XML

PDF

]]>
Research Article Wed, 20 Mar 2024 15:48:21 +0200
One new species of Stegocephalus Krøyer, 1842 (Amphipoda, Stegocephalidae) described from a seamount of the Caroline Plate, NW Pacific https://zookeys.pensoft.net/article/114209/ ZooKeys 1195: 121-130

DOI: 10.3897/zookeys.1195.114209

Authors: Yanrong Wang, Zhongli Sha, Xianqiu Ren

Abstract: A new species of the subfamily Stegocephalinae, Stegocephalus carolus sp. nov., is described from a seamount in the Caroline Plate. Two related species, S. cascadiensis (Moore, 1992) and S. longicornis (Gurjanova, 1962), were previously reported in the North Pacific. Important morphological characters which differentiate S. carolus sp. nov. from S. cascadiensis are found in antenna 1, the mouthparts, pereopod 7 and the length of rami of uropods 2 and 3. The new species differs from S. longicornis by characters of antenna 1, the mouthparts and the shape of epimeral plate 3. Additionally, the morphological differences between the new species and the remaining seven species of Stegocephalus are also presented.

HTML

XML

PDF

]]>
Research Article Thu, 14 Mar 2024 17:51:29 +0200
Systematic revision of the ant subfamily Leptanillinae (Hymenoptera, Formicidae) https://zookeys.pensoft.net/article/107506/ ZooKeys 1189: 83-184

DOI: 10.3897/zookeys.1189.107506

Authors: Zachary Griebenow

Abstract: The genus-level taxonomy of the ant subfamily Leptanillinae (Hymenoptera: Formicidae) is here revised, with the aim of delimiting genus-level taxa that are reciprocally monophyletic and readily diagnosable based upon all adult forms. This new classification reflects molecular phylogenetics and is informed by joint consideration of both male and worker morphology. Three valid genera are recognized in the Leptanillinae: Opamyrma, Leptanilla (= Scyphodon syn. nov., Phaulomyrma, Leptomesites, Noonilla syn. nov., Yavnella syn. nov.), and Protanilla (= Anomalomyrma syn. nov., Furcotanilla). Leptanilla and Protanilla are further divided into informal, monophyletic species groups. Synoptic diagnoses are provided for all genera and informal supraspecific groupings. In addition, worker-based keys to all described species within the Leptanillinae for which the worker caste is known are provided; and male-based keys to all species for which males are known, plus undescribed male morphospecies for which molecular data are published. The following species are described as new: Protanilla wallacei sp. nov., Leptanilla acherontia sp. nov., Leptanilla belantan sp. nov., Leptanilla bethyloides sp. nov., and Leptanilla najaphalla sp. nov.

HTML

XML

PDF

]]>
Monograph Tue, 16 Jan 2024 10:44:13 +0200
DNA barcoding and morphology revealed the existence of seven new species of squat lobsters in the family Munididae (Decapoda, Galatheoidea) in the southwestern Pacific https://zookeys.pensoft.net/article/114984/ ZooKeys 1188: 91-123

DOI: 10.3897/zookeys.1188.114984

Authors: Enrique Macpherson, Paula C. Rodríguez-Flores, Annie Machordom

Abstract: Specimens of squat lobsters belonging to the family Munididae Ahyong et al., 2010, representing the genera Garymunida Macpherson & Baba, 2022, Trapezionida Macpherson & Baba, 2022 and Typhlonida Macpherson & Baba, 2022, were collected during several cruises around New Caledonia and Papua New Guinea, Southwest Pacific. The integrative study of these specimens revealed the presence of one new species in Garymunida, five in Trapezionida and one in Typhlonida. We describe and illustrate these new species, providing some new data on the taxonomy of several rare or scarcely studied species of Trapezionida. Molecular data from different markers (mitochondrial and nuclear) was also included, based on data availability, to support the taxonomic status of different species. Finally, a key to species for each genus is also provided.

HTML

XML

PDF

]]>
Research Article Wed, 3 Jan 2024 10:46:16 +0200
A new species of Orchomenella (Amphipoda, Tryphosidae) described from hydrothermal vent in the Okinawa Trough, Northwest Pacific https://zookeys.pensoft.net/article/111420/ ZooKeys 1184: 261-271

DOI: 10.3897/zookeys.1184.111420

Authors: Yanrong Wang, Zhongli Sha, Xianqiu Ren

Abstract: A new species of the family Tryphosidae, Orchomenella compressa sp. nov., is described from hydrothermal vents in the Okinawa Trough. This is the first known Orchomenella species found in vent fields. Important morphological characters that differentiate O. compressa sp. nov. from its congeners are the absence of eyes, the compressed distal three articles of gnathopod 2, the shape of the posterior margin of epimerons 2 and 3, and the number of dorsal spines on the telson. The genetic divergence of the analyzed COI gene clearly supports this new taxon.

HTML

XML

PDF

]]>
Research Article Tue, 21 Nov 2023 10:15:10 +0200
Epitomapta aumakua sp. nov., a new species of apodous sea cucumber from Hawai`i (Echinodermata, Holothuroidea, Apodida) https://zookeys.pensoft.net/article/111620/ ZooKeys 1183: 73-80

DOI: 10.3897/zookeys.1183.111620

Authors: Francisco Alonso Solís-Marín, Carlos Andrés Conejeros-Vargas, Andrea Alejandra Caballero-Ochoa, Sheila Colleen Byers

Abstract: Epitomapta aumakua sp. nov. occurs at a depth of 2.5 m in Kualoa, O`ahu, Hawai`i, living in coarse sand. It is distinctive in having 12 pinnate tentacles, each tentacle with three pairs of digits and 6–8 sensory cups. The body wall bears papillae or oval bumps, and the length of body reaches a maximum length of 18.4 mm after relaxation.

HTML

XML

PDF

]]>
Research Article Tue, 31 Oct 2023 15:58:12 +0200
Phylogeography and genetic diversity of the Japanese mud shrimp Upogebia major (Crustacea, Decapoda, Upogebiidae): Natural or anthropogenic dispersal? https://zookeys.pensoft.net/article/105030/ ZooKeys 1182: 259-287

DOI: 10.3897/zookeys.1182.105030

Authors: Kyosuke Kitabatake, Kentaro Izumi, Natsuko I. Kondo, Kenji Okoshi

Abstract: Upogebia major (De Haan, 1841) is known for forming huge burrows in sandy, intertidal areas that can extend to depths of over 2 m. Despite its widespread distribution in East Asia and Russia, the genetic relatedness of its regional populations remains uncertain, likely owing to difficulties in specimen collection. Therefore, to appraise the phylogeographic patterns, genetic diversity, and morphological variety of U. major, the mitochondrial DNA of specimens collected from Japan, Korea and China were subjected to molecular phylogenetic analyses of COI genes, alongside morphological assessment. As a result, we discovered four principal groups; of these, Group 1 consisted predominantly of Japanese specimens, while Groups 3 and 4 were interpreted as having originated from the continent. Group 2 exhibited genetic segregation from both continental and Japanese descent. Group 1 mostly comprising Japanese specimens implies that the planktonic larvae of U. major were disseminated north and south by ocean currents encompassing the Japanese archipelago. In contrast, individuals probably originating from the continent were discovered in Lake Notoro, Hokkaido and Matsukawa-ura, Fukushima in northeastern Japan, indicating possible introduction from the continent through ocean currents or unintentional introduction with other organisms imported. Additionally, one of the specimens collected from Matsukawa-ura exhibited significant genetic and morphological differences from other specimens, suggesting the possibility of being a subspecies. The outcomes of this study not only offer valuable insights into the origins of distribution of U. major but also introduce a novel challenge of assessing the coexistence of two routes: natural and anthropogenic dispersion.

HTML

XML

PDF

]]>
Research Article Thu, 19 Oct 2023 13:51:27 +0300
Redescription of the hispidoberycid, Hispidoberyx ambagiosus Kotlyar, 1981 from Taiwan, with comments on its morphology (Beryciformes, Stephanoberycoidei, Hispidoberycidae) https://zookeys.pensoft.net/article/111296/ ZooKeys 1182: 19-34

DOI: 10.3897/zookeys.1182.111296

Authors: Yo Su, Chien-Hsiang Lin, Hsuan-Ching Ho

Abstract: A rare spiny-scale pricklefish, Hispidoberyx ambagiosus Kotlyar, 1981, is redescribed based on four specimens collected from Taiwan. Their sampling locality represents the northernmost record of the family, which extends the family’s distribution from the eastern Indian Ocean and the South China Sea to northeastern Taiwan in the northwestern Pacific Ocean. A detailed description of these specimens and the first description of its sagittal otoliths are provided. In addition, the specimens are compared with other known specimens. Intraspecific variation of some morphological characters are discussed.

HTML

XML

PDF

]]>
Research Article Wed, 11 Oct 2023 16:19:11 +0300
Seven new species of Tetranemertes Chernyshev, 1992 (Monostilifera, Hoplonemertea, Nemertea) from the Caribbean Sea, western Pacific, and Arabian Sea, and revision of the genus https://zookeys.pensoft.net/article/109521/ ZooKeys 1181: 167-200

DOI: 10.3897/zookeys.1181.109521

Authors: Irina Cherneva, Christina I. Ellison, Eduardo E. Zattara, Jon L. Norenburg, Megan L. Schwartz, Juan Junoy, Svetlana A. Maslakova

Abstract: The marine ribbon worm genus Tetranemertes Chernyshev, 1992 currently includes three species: the type species T. antonina (Quatrefages, 1846) from the Mediterranean Sea, T. rubrolineata (Kirsteuer, 1965) from Madagascar, and T. hermaphroditica (Gibson, 1982) from Australia. Seven new species are described: T. bifrost sp. nov., T. ocelata sp. nov., T. majinbuui sp. nov., and T. pastafariensis sp. nov. from the Caribbean Sea (Panamá), and three species, T. unistriata sp. nov., T. paulayi sp. nov., and T. arabica sp. nov., from the Indo-West Pacific (Japan and Oman). As a result, an amended morphological diagnosis of the genus is offered. To improve nomenclatural stability, a neotype of Tetranemertes antonina is designated from the Mediterranean. The newly described species, each characterized by features of external appearance and stylet apparatus, as well as by DNA-barcodes, form a well-supported clade with T. antonina on a molecular phylogeny of monostiliferan hoplonemerteans based on partial sequences of COI, 16S rRNA, 18S rRNA, and 28S rRNA. Six of the seven newly described species, as well as T. rubrolineata, possess the unusual character of having a central stylet basis slightly bilobed to deeply forked posteriorly in fully grown individuals, a possible morphological synapomorphy of the genus. In addition, an undescribed species of Tetranemertes is reported from the Eastern Tropical Pacific (Panamá), increasing the total number of known species in the genus to eleven.

HTML

XML

PDF

]]>
Research Article Thu, 5 Oct 2023 19:05:47 +0300
A new species of Rhyncholagena Lang, 1944 (Copepoda, Harpacticoida, Miraciidae) from Palau https://zookeys.pensoft.net/article/109288/ ZooKeys 1180: 181-199

DOI: 10.3897/zookeys.1180.109288

Authors: Jisu Yeom, Wonchoel Lee

Abstract: A new species of Miraciidae Dana, 1846, Rhyncholagena cuspis sp. nov., was described from Palau. Morphological descriptions and gene fragment sequence barcoding were performed on the 11th species of Rhyncholagena Lang, 1944 collected from sandy sediment samples in the subtidal zone of the Philippine Sea, Palau. Morphological characteristics were compared and an updated identification key was provided. A new species, Rhyncholagena cuspis sp. nov., was found to be morphologically similar to Rhyncholagena littoralis Por, 1967 and R. bermudensis Malt, 1990. This is the first record of the genus Rhyncholagena in Palau. The study provides basic data for future studies and highlights the need for continued exploration of marine biodiversity in Palau and other regions.

HTML

XML

PDF

]]>
Research Article Wed, 20 Sep 2023 15:38:46 +0300
Current knowledge on the diversity of Eumolpinae (Coleoptera, Chrysomelidae) in New Caledonia https://zookeys.pensoft.net/article/101293/ ZooKeys 1177: 41-55

DOI: 10.3897/zookeys.1177.101293

Authors: Leonardo Platania, Jesús Gómez-Zurita

Abstract: The Eumolpinae leaf beetles of New Caledonia are very diverse, but our knowledge about their diversity is still incomplete. Following a renewed interest in the group in the last two decades, there has been an exponential increase in the number of species described, with species descriptions and taxonomic reassessment ongoing. In this work, the catalogue of New Caledonian Eumolpinae is updated, incorporating all these recent changes, and also indicating the collection where type specimens are currently available. The updated catalogue includes 120 species in 13 genera, and more additions and taxonomic changes, including new combinations, are expected in forthcoming years. Here two new synonymies are reported, namely Dumbea striata Jolivet, Verma & Mille, 2007 = Taophila cancellata Samuelson, 2010, syn. nov.; and Dematochroma theryi Jolivet, Verma & Mille, 2010 = Dematochroma poyensis Jolivet, Verma & Mille, 2010, syn. nov. Moreover, two species still retaining their original adscription to the genus Colaspis Fabricius, 1801, are treated as incertae sedis. This catalogue represents a useful tool for future taxonomic studies of New Caledonian Chrysomelidae and can assist biodiversity surveys and conservation studies within the archipelago.

HTML

XML

PDF

]]>
Catalogue Wed, 30 Aug 2023 17:58:04 +0300
Taxonomy, phylogeny, and biodiversity of Lumbrineridae (Annelida, Polychaeta) from the Central Pacific Clarion-Clipperton Zone https://zookeys.pensoft.net/article/100483/ ZooKeys 1172: 61-100

DOI: 10.3897/zookeys.1172.100483

Authors: Lenka Neal, Emily Abrahams, Helena Wiklund, Muriel Rabone, Guadalupe Bribiesca-Contreras, Eva C. D. Stewart, Thomas G. Dahlgren, Adrian G. Glover

Abstract: The DNA taxonomy of six species of the annelid family Lumbrineridae collected from the Clarion-Clipperton Zone (CCZ) in the Central Pacific, an area of potential mining interest for polymetallic nodules, is presented. Lumbrinerids are an ecologically important and understudied annelid family within the deep sea, with many species still undescribed. This study aims to document the taxonomy and biodiversity of the CCZ using specimens collected from the UK-1, OMS, and NORI-D exploration contract areas and Areas of Particular Environmental Interest. Species were identified through a combination of morphological and molecular phylogenetic analysis. We present informal species descriptions associated with voucher specimens, accessible through the Natural History Museum (London) collections, to improve future taxonomic and biodiversity studies of this region. Five taxa in this study had no morphological or genetic matches within the literature and therefore are possibly new to science, but their suboptimal morphological preservation prevented the formalisation of new species. The most abundant taxon Lumbrinerides cf. laubieri (NHM_0020) was compared with the holotype of Lumbrinerides laubieri Miura, 1980 from the deep Northeast Atlantic. Currently no reliable morphological characters separating the Pacific and Atlantic specimens have been found and molecular data from the Atlantic specimens was not available.

HTML

XML

PDF

]]>
Research Article Tue, 25 Jul 2023 13:49:42 +0300
Austrelatus gen. nov., a new genus of Australasian diving beetles (Coleoptera, Dytiscidae, Copelatinae), with the discovery of 31 new species from New Guinea https://zookeys.pensoft.net/article/103834/ ZooKeys 1170: 1-164

DOI: 10.3897/zookeys.1170.103834

Authors: Helena Shaverdo, Jiří Hájek, Lars Hendrich, Suriani Surbakti, Rawati Panjaitan, Michael Balke

Abstract: Herein, Austrelatus gen. nov. (type species: Copelatus irregularis W.J. Macleay, 1871) is described for a distinctive lineage of predominantly Australasian species previously assigned to Copelatus Erichson, 1832. The new genus was retrieved as well supported, monophyletic clade in phylogenetic analysis of DNA sequences data using Bayesian and parsimony approaches. The main morphological diagnostic character of Austrelatus is a complex median lobe of the aedeagus, with evident dorsal and ventral sclerites usually divided in apical half into two lobes of different shape or otherwise modified. Morphological comparison of the new genus with other Copelatinae genera, especially with Copelatus and Exocelina Broun, 1886, and a generic key to the New Guinean Copelatinae are provided. New combinations are established for 31 already described species mainly from the Australian Region (all from Copelatus): Austrelatus adelbert (Megna, Atthakor, Manaono, Hendrich & Balke, 2017), comb. nov.; A. badeni (Sharp, 1882), comb. nov.; A. bakewelli (J. Balfour-Browne, 1939), comb. nov.; A. baranensis (Hájek, Shaverdo, Hendrich & Balke, 2021), comb. nov.; A. bougainvillensis (Hájek, Shaverdo, Hendrich & Balke, 2021), comb. nov.; A. boukali (Hendrich & Balke, 1998), comb. nov.; A. clarki (Sharp, 1882), comb. nov.; A. daemeli (Sharp, 1882), comb. nov.; A. davidi (Wewalka, 2017), comb. nov.; A. deccanensis (Sheth, Ghate & Hájek, 2018), comb. nov.; A. fidschiensis (Zimmermann, 1928), comb. nov.; A. gestroi (Régimbart, 1892), comb. nov.; A. irregularis (W.J. Macleay, 1871), comb. nov.; A. kaszabi (Guignot, 1956), comb. nov.; A. kietensis (Hájek, Shaverdo, Hendrich & Balke, 2021), comb. nov.; A. laevipennis (Hájek, Shaverdo, Hendrich & Balke, 2021), comb. nov.; A. luteomaculatus (Guignot, 1956), comb. nov.; A. maushomi (Sheth, Ghate & Hájek, 2018), comb. nov.; A. neoguineensis (Zimmermann, 1919), comb. nov.; A. nigrolineatus (Sharp, 1882), comb. nov.; A. papuensis (J. Balfour-Browne, 1939), comb. nov.; A. parallelus (Zimmermann, 1920a), comb. nov.; A. schuhi (Hendrich & Balke, 1998), comb. nov.; A. sibelaemontis (Hájek, Hendrich, Hawlitschek & Balke, 2010), comb. nov.; A. strigosulus (Fairmaire, 1878), comb. nov.; A. ternatensis (Régimbart, 1899), comb. nov.; A. uludanuensis (Hendrich & Balke, 1995), comb. nov.; A. urceolus (Hájek, Shaverdo, Hendrich & Balke, 2021), comb. nov.; A. variistriatus (Hájek, Shaverdo, Hendrich & Balke, 2021), comb. nov.; A. wallacei (J. Balfour-Browne, 1939), comb. nov. and A. xanthocephalus (Régimbart, 1899), comb. nov. Austrelatus species from New Guinea are divided into two informal species groups, the A. neoguineensis group and A. papuensis group, and A. fumato sp. nov. and A. setiphallus sp. nov. standing aside of them. The A. neoguineensis group is introduced with three previously known species and 29 new species described here based on the morphological characters and Cox1 data: Austrelatus baliem sp. nov., A. bormensis sp. nov., A. brazza sp. nov., A. debulensis sp. nov., A. fakfak sp. nov., A. febrisauri sp. nov., A. fojaensis sp. nov., A. garainensis sp. nov., A. innominatus sp. nov., A. lembenensis sp. nov., A. lisae sp. nov., A. manokwariensis sp. nov., A. mimika sp. nov., A. mirificus sp. nov., A. moreguinensis sp. nov., A. nadjae sp. nov., A. oksibilensis sp. nov., A. pseudoneoguineensis sp. nov., A. pseudoksibilensis sp. nov., A. rajaampatensis sp. nov., A. rouaffer sp. nov., A. rugosus sp. nov., A. sandaunensis sp. nov., A. sarmiensis sp. nov., A. securiformis sp. nov., A. testegensis sp. nov., A. toricelli sp. nov., A. vagauensis sp. nov., and A. wanggarensis sp. nov. Copelatus vagestriatus Zimmermann, 1919, syn. nov. is recognised as a junior subjective synonym of A. clarki (Sharp, 1882). The lectotypes of Copelatus gestroi Régimbart, 1892, C. neoguineensis Zimmermann, 1919 and C. xanthocephalus Régimbart, 1899 are designated. All species are (re)described, and their important species characters (genitalia, habitus, and colour patterns) are illustrated. Keys to all species are provided. The known distribution and habitat preferences of each species are outlined briefly. New Guinean Austrelatus occupy a variety of stagnant water habitats, either lentic sensu stricto, or standing water associated with lotic habitats (e.g., backflows, rockpools, intermittent / ephemeral stream pools).

HTML

XML

PDF

]]>
Research Article Wed, 19 Jul 2023 18:52:27 +0300
An enigmatic new octocoral species (Anthozoa, Octocorallia, Malacalcyonacea) from Isla del Coco National Park https://zookeys.pensoft.net/article/100576/ ZooKeys 1169: 317-331

DOI: 10.3897/zookeys.1169.100576

Authors: Odalisca Breedy, Catherine S. McFadden, Jorge Cortés

Abstract: Aliena parva gen. et sp. nov. is described from Cocos Island, Costa Rica. The species was found at various islets and rocky outcrops north and northwest of the island, 20–30 m in depth. The genus is characterised by polyps, retracting into calyces, that form thin encrusting mats extending on dead or live substrates. Sclerites are mostly asymmetrical spindles. Anthocodial rods are arranged in points, not forming a collaret. Colonies and coenenchymal sclerites are red, and polyps are transparent. Using an integrative taxonomic approach, we found the new genus to morphologically and genetically differ from all other described taxa. The molecular phylogenetic analyses provide strong support for the placement of this new genus in the family Pterogorgiidae. Morphologically it is unlike any of the other members of this family, necessitating an amendment to the diagnosis of Pterogorgiidae. Like several other known taxa of octocorals with encrusting growth forms, Aliena gen. nov. appears to have evolved from a gorgonian ancestor by loss of an internal skeletal axis. It is the first member of Pterogorgiidae to be reported from the eastern Pacific, contributing further to the knowledge of marine biodiversity in the eastern tropical Pacific and to the octocoral biodiversity of Cocos Island in particular.

HTML

XML

PDF

]]>
Research Article Tue, 18 Jul 2023 18:04:17 +0300
New records of the squat lobster genus Munidopsis Whiteaves, 1874 (Crustacea, Decapoda, Munidopsidae) from the deep sea off Taiwan https://zookeys.pensoft.net/article/104009/ ZooKeys 1166: 271-286

DOI: 10.3897/zookeys.1166.104009

Authors: Masayuki Osawa, Tin-Yam Chan, Chien-Hui Yang

Abstract: Two species of the squat lobster family Munidopsidae, Munidopsis albatrossae Pequegnat & Pequegnat, 1973 and M. pycnopoda Baba, 2005, are reported from Taiwan for the first time based on specimens collected from lower bathyal depths. The Taiwanese material of M. pycnopoda also represents the first record of the species from the Pacific Ocean and greatly extends this species’ geographical range from the western Indian Ocean to western Pacific. The giant Munidopsis specimen from Taiwan is identified as M. albatrossae mainly by DNA barcoding even though M. albatrossae and M. aries (A. Milne-Edwards, 1880) are both morphologically and genetically extremely similar.

HTML

XML

PDF

]]>
Research Article Mon, 12 Jun 2023 10:38:24 +0300
On Caledromus robinsmithi, a new genus and species of Psychrodromini Martens, 2001 (Crustacea, Ostracoda, Herpetocypridinae) from New Caledonia (Pacific Ocean) https://zookeys.pensoft.net/article/104045/ ZooKeys 1165: 155-182

DOI: 10.3897/zookeys.1165.104045

Authors: Koen Martens, Vitor Góis Ferreira, Nadiny Martins de Almeida, Janet Higuti

Abstract: The New Caledonian Archipelago is a hot spot for biodiversity and endemism. Whereas popular groups such as birds and plants are well-studied, invertebrate groups such as ostracods remain ill-known. Here, Caledromus robinsmithi gen. et sp. nov. is described from a single locality on ‘Grande Terre’, the main island of the archipelago. The new genus belongs to the Psychrodromini, one of the four tribes in the subfamily Herpetocypridinae (family Cyprididae). Caledromus gen. nov. can be distinguished from all other herpetocypridinids by a combination of the following factors: the absence of marginal septa in both valves, the mildly developed marginal valve structures, the small Rome organ on the A1, the total reduction of the five natatory setae on the A2, the rectangular second palp segment of the Mx1, the broad and asymmetrical palp on the female T1, the absence of additional postlabyrinthal coils in the Hp and the seta Sp of the CR which is a fixed spine. Because of the close similarity to the genus Psychrodromus, the new genus is thought to have Palaearctic affinities, contrary to other ostracod species in New Caledonia, which are either circumtropical or with Australian zoogeographical connections.

HTML

XML

PDF

]]>
Research Article Thu, 1 Jun 2023 18:45:57 +0300
Review and guide to the isopods (Crustacea, Isopoda) of littoral and sublittoral marine habitats in the Southern California Bight https://zookeys.pensoft.net/article/100390/ ZooKeys 1162: 1-167

DOI: 10.3897/zookeys.1162.100390

Authors: Timothy D. Stebbins, Regina Wetzer

Abstract: The isopod crustaceans reported from or expected to occur in littoral and sublittoral marine habitats of the Southern California Bight (SCB) in the northeastern Pacific Ocean are reviewed. A total of 190 species, representing 105 genera in 42 families and six suborders are covered. Approximately 84% of these isopods represent described species with the remaining 16% comprising well-documented “provisional” but undescribed species. Cymothoida and Asellota are the most diverse of the six suborders, accounting for ca. 36% and 29% of the species, respectively. Valvifera and Sphaeromatidea are the next most speciose suborders with between 13–15% of the species each, while the suborder Limnorioidea represents fewer than 2% of the SCB isopod fauna. Finally, the mostly terrestrial suborder Oniscidea accounts for ca. 5% of the species treated herein, each which occurs at or above the high tide mark in intertidal habitats. A key to the suborders and superfamilies is presented followed by nine keys to the SCB species within each of the resultant groups. Figures are provided for most species. Bathymetric range, geographic distribution, type locality, habitat, body size, and a comprehensive list of references are included for most species.

HTML

XML

PDF

]]>
Review Article Tue, 16 May 2023 17:58:35 +0300
Seven new “cryptic” species of Discodorididae (Mollusca, Gastropoda, Nudibranchia) from New Caledonia https://zookeys.pensoft.net/article/98258/ ZooKeys 1152: 45-95

DOI: 10.3897/zookeys.1152.98258

Authors: Julie Innabi, Carla C. Stout, Ángel Valdés

Abstract: The study of a well-preserved collection of discodorid nudibranchs collected in Koumac, New Caledonia, revealed the presence of seven species new to science belonging to the genera Atagema, Jorunna, Rostanga, and Sclerodoris, although some of the generic assignments are tentative as the phylogeny of Discodorididae remains unresolved. Moreover, a poorly known species of Atagema originally described from New Caledonia is re-described and the presence of Sclerodoris tuberculata in New Caledonia is confirmed with molecular data. All the species described herein are highly cryptic on their food source and in the context of the present study the term “cryptic” is used to denote such species. This paper highlights the importance of comprehensive collecting efforts to identify and document well-camouflaged taxa.

HTML

XML

PDF

]]>
Research Article Tue, 7 Mar 2023 18:58:42 +0200
Three new species of Nautilus Linnaeus, 1758 (Mollusca, Cephalopoda) from the Coral Sea and South Pacific https://zookeys.pensoft.net/article/84427/ ZooKeys 1143: 51-69

DOI: 10.3897/zookeys.1143.84427

Authors: Gregory J. Barord, David J. Combosch, Gonzalo Giribet, Neil Landman, Sarah Lemer, Job Veloso, Peter D. Ward

Abstract: Nautiloids are a charismatic group of marine molluscs best known for their rich fossil record, but today they are restricted to a handful of species in the family Nautilidae from around the Coral Triangle. Recent genetic work has shown a disconnect between traditional species, originally defined on shell characters, but now with new findings from genetic structure of various Nautilus populations. Here, three new species of Nautilus from the Coral Sea and South Pacific region are formally named using observations of shell and soft anatomical data augmented by genetic information: N. samoaensis sp. nov. (from American Samoa), N. vitiensis sp. nov. (from Fiji), and N. vanuatuensis sp. nov. (from Vanuatu). The formal naming of these three species is timely considering the new and recently published information on genetic structure, geographic occurrence, and new morphological characters, including color patterns of shell and soft part morphology of hood, and will aid in managing these possibly endangered animals. As recently proposed from genetic analyses, there is a strong geographic component affecting taxonomy, with the new species coming from larger island groups that are separated by at least 200 km of deep water (greater than 800 m) from other Nautilus populations and potential habitats. Nautilid shells implode at depths greater than 800 m and depth therefore acts as a biogeographical barrier separating these species. This isolation, coupled with the unique, endemic species in each locale, are important considerations for the conservation management of the extant Nautilus species and populations.

HTML

XML

PDF

]]>
Research Article Wed, 25 Jan 2023 18:27:13 +0200
A species-group key and notes on phylogeny and character evolution in New Guinean Exocelina Broun, 1886 diving beetles (Coleoptera, Dytiscidae, Copelatinae) https://zookeys.pensoft.net/article/94205/ ZooKeys 1131: 31-58

DOI: 10.3897/zookeys.1131.94205

Authors: Helena Shaverdo, Michael Balke

Abstract: Detailed information about the known species groups of Exocelina Broun, 1886 from New Guinea is presented, including species numbers, distribution, and references of species-group diagnoses, keys to the species, and species descriptions. An identification key to all species groups is provided. Phylogeny and morphological character evolution are discussed.

HTML

XML

PDF

]]>
Research Article Tue, 22 Nov 2022 17:34:53 +0200
Genome-wide survey reveals the phylogenomic relationships of Chirolophis japonicus Herzenstein, 1890 (Stichaeidae, Perciformes) https://zookeys.pensoft.net/article/91543/ ZooKeys 1129: 55-72

DOI: 10.3897/zookeys.1129.91543

Authors: Lu Liu, Qi Liu, Tianxiang Gao

Abstract: Fish are the largest vertebrate group, consisting of more than 30 000 species with important ecological and economical value, while less than 3% of fish genomes have been published. Herein, a fish, Chirolophis japonicus, was sequenced using the next-generation sequencing. Approximately 595.7 megabase pair of the C. japonicus genome was assembled (49 901 contigs with 42.61% GC contents), leading to a prediction of 46 729 protein-coding gene models. A total of 554 136 simple sequence repeats was identified in the whole genome of C. japonicus, and dinucleotide microsatellite motifs were the most abundant, accounting for 59.49%. Phylogenomic analysis of 16 genomes based on the 694 single-copy genes suggests that C. japonicus is closely related with Anarrhichthys ocellatus, Cebidichthys violaceus, and Pholis gunnellus. The results provide more thorough genetic information of C. japonicus and a theoretical basis and reference for further genome-wide analysis.

HTML

XML

PDF

]]>
Research Article Fri, 11 Nov 2022 17:31:57 +0200
Revision of Vanuatubasis Ober & Staniczek, 2009 (Odonata, Coenagrionidae), with description of seven new species https://zookeys.pensoft.net/article/89751/ ZooKeys 1128: 129-169

DOI: 10.3897/zookeys.1128.89751

Authors: Natalie A. Saxton, Milen G. Marinov, Seth M. Bybee

Abstract: Vanuatubasis Ober & Staniczek, 2009 is an endemic genus of damselfly found on the island archipelago of Vanuatu. Previously only three species were assigned to the genus. Here, all known species of Vanuatubasis are formally described and treated, including the association of females for known species. The following new congeners are also described: V. discontinua sp. nov., V. evelynae sp. nov., V. insularivorum sp. nov., V. kapularum sp. nov., V. nunggoli sp. nov., V. rhomboides sp. nov., and V. xanthochroa sp. nov. from material collected across six different islands. An illustrated key to both males and females of all species within Vanuatubasis is provided as well as distributions for all known species.

HTML

XML

PDF

]]>
Research Article Wed, 9 Nov 2022 09:43:04 +0200
Redescription of a rarely encountered species Travisa chinensis Grube, 1869 (Annelida, Travisiidae), including a description of a new species of Travisa from Amoy, China https://zookeys.pensoft.net/article/90020/ ZooKeys 1128: 1-17

DOI: 10.3897/zookeys.1128.90020

Authors: Deyuan Yang, Xuwen Wu, Zhi Wang, Xiaoyu Zhao, Jiangshiou Hwang, Lizhe Cai

Abstract: The original description of Travisia chinensis Grube, 1869 was incomplete, leading to confusion with other species. To clarify the status of this species, we provide a redescription of, and remarks on, T. chinensis based on an examination of the type specimen. We also describe Travisia amoyanus sp. nov., collected from Xiamen (Amoy), China, and originally identified as T. chinensis by Monro (1934). The new species can be distinguished from its congeners by a combination of the following characters: the total number of segments (34 or 35) and chaetigers (33 or 34), parapodial lappets first from chaetiger 15, and a pygidium with a large ventral triangular cirrus and about six encircling lateral cirri. Genetic distances and phylogenetic analyses based on the mitochondrial (16S rRNA) and nuclear (18S rRNA) genes support the identity of the new species.

HTML

XML

PDF

]]>
Research Article Fri, 4 Nov 2022 15:56:44 +0200
Description of two species of the genus Astrodia Verrill, 1899 (Ophiuroidea, Euryalida, Asteronychidae), including a new species from seamounts in the West Pacific https://zookeys.pensoft.net/article/87397/ ZooKeys 1123: 99-122

DOI: 10.3897/zookeys.1123.87397

Authors: Xiaojun Xie, Bo Lu, Jie Pang, Dongsheng Zhang

Abstract: Five specimens of Ophiuroidea from deep-sea seamounts in the West Pacific were collected and identified as two species, Astrodia duospina sp. nov. and Astrodia abyssicola. The new species, Astrodia duospina sp. nov., can be distinguished from its congeners by having indistinct or underdeveloped oral papillae, relatively short genital slits, crescent-shaped lateral arm plates, and plate-shaped external ossicles on the aboral surface of the disc. One specimen was identified as Astrodia abyssicola, which has been reported in the north-western Pacific and the north-eastern coast of Japan. The most recent tabular key of Astrodia was revised with two more key characteristics added, the shape and presence of oral papillae and the number of arm spines. The phylogenetic relationship of Astrodia and Asteronyx was analyzed based on 16S and COI sequences. The discovery of the two species further expanded the geographical distribution of the genus Astrodia.

HTML

XML

PDF

]]>
Research Article Tue, 4 Oct 2022 14:38:03 +0300
Three new deep-sea species of Marphysa (Annelida, Eunicida, Eunicidae) from Papua New Guinea (Bismarck and Solomon seas) https://zookeys.pensoft.net/article/89990/ ZooKeys 1122: 81-105

DOI: 10.3897/zookeys.1122.89990

Authors: Nicolas Lavesque, Guillemine Daffe, Christopher Glasby, Stéphane Hourdez, Pat Hutchings

Abstract: Three new species of Marphysa Quatrefages, 1866, Marphysa banana sp. nov., Marphysa papuaensis sp. nov., and Marphysa zanolae sp. nov. are described from deep-sea sunken vegetation off Papua New Guinea, using both morphology and molecular data (for two species). With the presence of compound spinigers only and the branchiae present over many chaetigers, Marphysa banana sp. nov. belongs to the group B2. This species is characterised by the presence of eyes, the presence of branchiae starting from chaetiger 20, and by the presence of three types of pectinate chaetae and bidentate subacicular hooks starting from chaetigers 13–52. With the presence of compound falcigers only and the branchiae restricted to a short anterior region, Marphysa papuaensis sp. nov. belongs to the group C1. This species has a bilobed prostomium but no eyes, has branchiae from chaetigers 7 to 14–16 with up to 16 filaments. Marphysa papuaensis sp. nov. is also characterised by the presence of bidentate subacicular hooks from chaetiger 20 and by a single type of pectinate chaetae. Finally, Marphysa zanolae sp. nov. belongs to the group C2, with the presence of compound falcigers only and the branchiae present over many chaetigers. This species is characterised by the absence of eyes, by the presence of branchiae with a single long filament starting from chaetiger 31, by unidentate subacicular hooks starting from chaetiger 28 and finally by one type of pectinate chaetae with very long outer teeth.

HTML

XML

PDF

]]>
Research Article Fri, 23 Sep 2022 18:23:49 +0300
Replacement name for a Panamic bivalve (Mollusca, Bivalvia, Cyrenidae) https://zookeys.pensoft.net/article/83037/ ZooKeys 1108: 11-13

DOI: 10.3897/zookeys.1108.83037

Authors: Eugene V. Coan, Paul Valentich-Scott

Abstract: None

HTML

XML

PDF

]]>
Short Communication Thu, 23 Jun 2022 17:40:29 +0300
Revision of the new Australasian orb-weaving spider genus Salsa (Araneae, Araneidae) https://zookeys.pensoft.net/article/82388/ ZooKeys 1102: 107-148

DOI: 10.3897/zookeys.1102.82388

Authors: Volker W. Framenau, Pedro de S. Castanheira

Abstract: A new Australasian genus in the orb-weaving spider family Araneidae Clerck, 1757 is described to include seven species: Salsa fuliginata (L. Koch, 1871) comb. nov. (type species; = Epeira rubicundula Keyserling, 1887) syn. nov.) (Australia, introduced to New Zealand); S. brisbanae (L. Koch, 1867) comb. nov. (Australia); S. canalae (Berland, 1924) comb. nov. (New Caledonia); S. neneba sp. nov. (Papua New Guinea); S. recherchensis (Main, 1954) comb. nov. (Australia); S. rueda sp. nov. (Australia); and S. tartara sp. nov. (Australia; Lord Howe Island endemic). Salsa gen. nov. belongs to the Australasian informal backobourkiine clade and differs from other genera of this clade by a distinct abdominal shape (single posterior abdominal tubercle) and ventral colouration (pale lateral spindle-shaped bands), male pedipalp morphology (C-shaped median apophysis that has teeth-like tubercles inside the basal arch) and the shape of the female epigyne scape (partially translucent and generally shorter than the epigyne plate). Based mainly on male pedipalp morphology within the backobourkiines, Salsa gen. nov. has closest morphological affinities with Acroaspis Karsch, 1878 and Socca Framenau, Castanheira & Vink, 2022.

HTML

XML

PDF

]]>
Research Article Fri, 20 May 2022 10:34:34 +0300
Notomastus bermejoi, a new species of Capitellidae (Annelida, Polychaeta) from the Gulf of California, with morphological remarks on species with hooks in thoracic chaetigers https://zookeys.pensoft.net/article/83198/ ZooKeys 1102: 43-58

DOI: 10.3897/zookeys.1102.83198

Authors: Pablo Hernández-Alcántara, María E. García-Garza, Vivianne Solís-Weiss

Abstract: Notomastus bermejoi sp. nov. from the Gulf of California shelf is described, illustrated, and compared with its congeners bearing hooded hooks in thoracic chaetigers. This new species is characterized by the presence of a prostomial palpode, only notopodia in the first chaetiger, hooded hooks in neuropodia of chaetiger 11, and its distinct methyl green staining pattern consisting of: chaetigers 1–4 slightly stained, chaetigers 5–10 with green bands encircling the segments, and a darker, solid, green band encircling the body in chaetigers 11–12. It is mainly distributed in the central Gulf of California in fine sand bottoms (62–96%) at 32–106.4 m depth, tolerating a wide range of temperature (13.2–17.59 °C), dissolved oxygen (0.8–4.93 ml/L), and organic carbon (3.0–7.2%). The type material and original descriptions of Notomastus species with hooks in thoracic chaetigers were examined; an identification key and tables with morphological distinctive characteristics, methyl green staining patterns, and geographic distribution of these close species are provided.

HTML

XML

PDF

]]>
Research Article Thu, 19 May 2022 13:17:21 +0300
Review of Ophioplinthaca Verrill, 1899 (Echinodermata, Ophiuroidea, Ophiacanthidae), description of new species in Ophioplinthaca and Ophiophthalmus, and new records from the Northwest Pacific and the South China Sea https://zookeys.pensoft.net/article/76479/ ZooKeys 1099: 155-202

DOI: 10.3897/zookeys.1099.76479

Authors: Hasitha Nethupul, Sabine Stöhr, Haibin Zhang

Abstract: The ophiuroid genus Ophioplinthaca is well characterized by the deep incisions in the disc. Prior to this study, it contained 32 accepted species, but species limits and geographic distributions were not well understood. The manned submersible vehicle ‘Shenhaiyongshi’ was used to collect ophiuroid specimens from the deep-sea seamounts and cold seeps in the South China Sea and Northwest Pacific at 602–3600 m depth, during 2018 to 2020. The genus Ophioplinthaca was reviewed using both morphological data and a phylogenetic analysis, based on COI sequences. The taxonomic status of the genus Ophiophthalmus Matsumoto, 1917, a junior homonym of Ophiophthalmus Fitzinger, 1843 (a reptile) was clarified by proving prevailing usage of the ophiuroid name. A total of eight species were identified, including two new species, described as Ophioplinthaca brachispina sp. nov. and Ophiophthalmus serratus sp. nov., and two new records. The new species are characterized by unique features of the arm skeletons. Tabular keys to all Ophioplinthaca and Ophiophthalmus species are provided. Interspecific and intraspecific genetic distance of Ophioplinthaca species ranged from 2.32% to 19.72%, and from 0.26% to 0.90%, respectively. The data suggest that species of the genus Ophioplinthaca are more widely spread around the Northwest Pacific region deep-sea seamounts than previously known.

HTML

XML

PDF

]]>
Research Article Wed, 11 May 2022 18:50:45 +0300
Molecular phylogeny suggests synonymy of Sandalia bridgesi Lorenz, 2009 with S. triticea (Lamarck, 1810) (Gastropoda, Ovulidae) https://zookeys.pensoft.net/article/79402/ ZooKeys 1096: 189-206

DOI: 10.3897/zookeys.1096.79402

Authors: Qiong Wu, BingPeng Xing, Mao Lin, GuangCheng Chen, ChunGuang Wang

Abstract: The Ovulidae (Gastropoda, Cypraeoidea) is a family of small to medium Mollusca in the order Littorinimorpha, and Sandalia is a very small genus containing only three extant species. In the present study, 132 specimens of Ovulidae were collected, belonging to seven genera and nine species, including 54 Sandalia bridgesi and three Sandalia triticea individuals. The cytochrome c oxidase I gene, 16S rRNA, and ITS1-5.8S-ITS2 sequences were obtained from all specimens and compared with sequences downloaded from GenBank to calculate genetic distances and construct phylogenetic trees. The sequences of S. bridgesi and S. triticea exhibited a high degree of similarity, and S. bridgesi does not form a separate clade, supporting the proposal that S. bridgesi should be synonymised with S. triticea.

HTML

XML

PDF

]]>
Research Article Mon, 18 Apr 2022 09:17:36 +0300
Four new Parasterope (Ostracoda, Myodocopina) from the Northwest Pacific and their phylogeny based on 16S rRNA https://zookeys.pensoft.net/article/77996/ ZooKeys 1095: 13-42

DOI: 10.3897/zookeys.1095.77996

Authors: Huyen T. M. Pham, Ivana Karanovic

Abstract: Parasterope Kornicker, 1975 is a marine ostracod genus with 49 species described so far, which makes it the most diverse representative of the subfamily Cylindroleberidinae, as well as the entire family Cylindroleberididae. Despite its global distribution no species are reported from South Korea. Three new species collected from the Korean coast of the Sea of Japan (Parasterope busanensis sp. nov., P. singula sp. nov., and P. sohi sp. nov.), and one from the Japanese coast of the Pacific Ocean (P. sagami sp. nov.) are described. A taxonomic key to all named species from East Asia is provided. A phylogenetic tree is reconstructed based on partial 16S rRNA sequences of the four new species and other Cylindroleberidinae available from GenBank. Monophyly of Parasterope is supported by high posterior probabilities, but the phylogenetic analyses also indicate that some of the GenBank data attributed to this genus are probably misidentifications. A map of distribution and a checklist of all described Parasterope species are also provided.

HTML

XML

PDF

]]>
Research Article Wed, 13 Apr 2022 17:17:04 +0300
Order Euryalida (Echinodermata, Ophiuroidea), new species and new records from the South China Sea and the Northwest Pacific seamounts https://zookeys.pensoft.net/article/76292/ ZooKeys 1090: 161-216

DOI: 10.3897/zookeys.1090.76292

Authors: Hasitha Nethupul, Sabine Stöhr, Haibin Zhang

Abstract: Ophiuroids were collected by the manned submersible ‘Shenhaiyongshi’ from the deep-sea seamounts in the South China Sea and Northwest Pacific regions at 602–1920 m depth, during 2018 to 2020. A total of nine species was identified, including two new species and seven new records from the South China Sea and one new record from the Northwest Pacific region. Two new species are described as Asteroschema shenhaiyongshii sp. nov. and Asteroschema domogranulatum sp. nov. The seven new records included five species from the genus Asteroschema, and one species each from the genera Asterostegus and Astrodendrum. Comprehensive descriptions of morphological features are provided, including characteristics of the arm skeleton, as well as a phylogenetic analysis based on 16S and COI sequences. Intraspecific genetic distance ranges of Euryalida species from the present study were 0.34% to 1.38%, which was relatively low compared to other orders in the class Ophiuroidea. The present study suggests a high probability that species of the order Euryalida are more widely spread around the Indo-Pacific region than previously expected.

HTML

XML

PDF

]]>
Research Article Wed, 30 Mar 2022 15:41:39 +0300
New psychropotid species (Echinodermata, Holothuroidea, Elasipodida) of the Western Pacific with phylogenetic analyses https://zookeys.pensoft.net/article/69141/ ZooKeys 1088: 99-114

DOI: 10.3897/zookeys.1088.69141

Authors: Chuan Yu, Dongsheng Zhang, Ruiyan Zhang, Chunsheng Wang

Abstract: Holothurians of the family Psychropotidae are widely distributed but remain the least studied deep-sea holothurians. On an expedition to the Western Pacific, six psychropotid specimens were collected by the Jiaolong Human Operated Vehicle (HOV). Through morphological examination, four of them were identified as a new species, Benthodytes jiaolongi sp. nov., which was characterized as having minute papillae, a narrow brim, and a terminal anus; and the ossicles were rods and primary crosses. The remaining two specimens were identified as Psychropotes verrucicaudatus Xiao, Gong, Kou & Li, 2019, first recorded at the Kyushu-Palau Ridge. The phylogenetic analysis showed that B. jiaolongi sp. nov. and P. verrucicaudatus were embedded in the clades Benthodytes and Psycheotrephes, respectively, and that Benthodytes was paraphyletic. The new species clustered with Benthodytes sanguinolenta and was separated from the clade containing the other Benthodytes species.

HTML

XML

PDF

]]>
Research Article Wed, 9 Mar 2022 10:05:43 +0200
A genetic assessment of the population structure and demographic history of Odontamblyopus lacepedii (Perciformes, Amblyopinae) from the northwestern Pacific https://zookeys.pensoft.net/article/70860/ ZooKeys 1088: 1-15

DOI: 10.3897/zookeys.1088.70860

Authors: Linlin Zhao, Shouqiang Wang, Fangyuan Qu, Zisha Liu, Tianxiang Gao

Abstract: Coupled with geological and geographical history, climatic oscillations during the Pleistocene period had remarkable effects on species biodiversity and distribution along the northwestern Pacific. To detect the population structure and demographic history of Odontamblyopus lacepedii, 547-bp fragments of the mitochondrial DNA control region were sequenced. A low level of nucleotide diversity (0.0065 ± 0.0037) and a high level of haplotype diversity (0.98 ± 0.01) was observed. The Maximum Likelihood (ML) and Bayesian Inference phylogenetic trees showed no significant genealogical structure corresponding to sampling locations. The results of AMOVA and pairwise FST values revealed some significant genetic differentiation among populations, and the isolation by distance (IBD) analysis supported that the genetic differentiation was associated with the geographic distances. The demographic history of O. lacepedii examined by neutrality tests, mismatch distribution analysis, and Bayesian Skyline Plots (BSP) analysis suggested a sudden population expansion, and the expansion time was estimated to be around the Pleistocene. We hypothesize that the climate changes during the Pleistocene, ocean currents, and larval dispersal capabilities have played an important role in shaping contemporary phylogeographic pattern and population structure of O. lacepedii.

HTML

XML

PDF

]]>
Research Article Mon, 28 Feb 2022 10:00:37 +0200
Battle of the bands: systematics and phylogeny of the white Goniobranchus nudibranchs with marginal bands (Nudibranchia, Chromodorididae) https://zookeys.pensoft.net/article/72939/ ZooKeys 1083: 169-210

DOI: 10.3897/zookeys.1083.72939

Authors: Giun Yee Soong, Lynn J. Bonomo, James D. Reimer, Terrence M. Gosliner

Abstract: Species identities of Goniobranchus nudibranchs with white bodies and various marginal bands have long been problematic. In this study, specimens of these Goniobranchus nudibranchs from the Philippines, Peninsular Malaysia, Japan, Papua New Guinea, and Madagascar were analyzed and molecular data were obtained in order to re-examine the relationships between species within this “white Goniobranchus with marginal bands” group. The analyses clearly recovered six species groups corresponding to the described species Goniobranchus albonares, G. preciosus, G. rubrocornutus, G. sinensis, and G. verrieri as well as one new species, G. fabulus Soong & Gosliner, sp. nov. Notably, G. preciosus, G. sinensis, G. rubrocornutus, G. verrieri, and G. fabulus Soong & Gosliner, sp. nov. exhibit color variation and polymorphism, suggesting that some aspects of color patterns (e.g., presence or absence of dorsal spots) may not always be useful in the identification of species in the “white Goniobranchus with marginal bands” group, whereas other features such as gill and rhinophore colors and the arrangement and colors of the mantle marginal bands are more diagnostic for each species.

HTML

XML

PDF

]]>
Research Article Tue, 25 Jan 2022 18:01:01 +0200
A new Diancta species of the family Diplommatinidae (Cyclophoroidea) from Vanua Levu Island, Fiji https://zookeys.pensoft.net/article/73241/ ZooKeys 1073: 1-12

DOI: 10.3897/zookeys.1073.73241

Authors: Estée Bochud, David Haberthür, Ruslan Hlushchuk, Eike Neubert

Abstract: A new species of Diancta of the staircase snail family Diplommatinidae is described from Mt. Savusavu, Vanua Levu Island, Fiji. Due to its left coiling shell and a constriction before the last whorl, it is placed in the genus Diancta. Micro-CT imaging reveals two apertural teeth and an inner lamella that is situated at the zone of constriction. The shell abruptly changes coiling direction by 45 degrees before the last whorl. Up to now, this coiling modus had not yet been documented for any species of Diplommatinidae from the Fiji Islands.

HTML

XML

PDF

]]>
Research Article Mon, 29 Nov 2021 17:50:45 +0200
Novel lures and COI sequences reveal cryptic new species of Bactrocera fruit flies in the Solomon Islands (Diptera, Tephritidae, Dacini) https://zookeys.pensoft.net/article/68375/ ZooKeys 1057: 49-103

DOI: 10.3897/zookeys.1057.68375

Authors: Luc Leblanc, Francis Tsatsia, Camiel Doorenweerd

Abstract: Results from a snap-shot survey of Dacine fruit flies carried out on three of the Solomon Islands in April 2018 are reported. Using traps baited with the male lures cue-lure, methyl eugenol, and zingerone, 30 of the 48 species previously known to occur in the Solomon Islands were collected. Six species are newly described here: Bactrocera allodistincta sp. nov., B. geminosimulata sp. nov., B. kolombangarae sp. nov., B. quasienochra sp. nov., B. tsatsiai sp. nov., and B. vargasi sp. nov., all authored by Leblanc & Doorenweerd. An illustrated key to the 54 species now known to be present in the country is provided.

HTML

XML

PDF

]]>
Research Article Fri, 27 Aug 2021 19:34:46 +0300
A review of the Eviota zebrina complex, with descriptions of four new species (Teleostei, Gobiidae) https://zookeys.pensoft.net/article/66675/ ZooKeys 1057: 149-184

DOI: 10.3897/zookeys.1057.66675

Authors: Luke Tornabene, David W. Greenfield, Mark V. Erdmann

Abstract: The Eviota zebrina complex includes eight species of closely-related dwarfgobies, four of which are herein described as new. The complex is named for Eviota zebrina Lachner & Karnella, 1978, an Indian Ocean species with the holotype from the Seychelles Islands and also known from the Maldives, which was once thought to range into the Gulf of Aqaba and the Red Sea eastward to the Great Barrier Reef of Australia. Our analysis supports the recognition of four genetically distinct, geographically non-overlapping, species within what was previously called E. zebrina, with E. zebrina being restricted to the Indian Ocean, E. marerubrum sp. nov. described from the Red Sea, E. longirostris sp. nov. described from western New Guinea, and E. pseudozebrina sp. nov. described from Fiji. The caudal fin of all four of these species is crossed by oblique black bars in preservative, but these black bars are absent from the four other species included in the complex. Two of the other species within the complex, E. tetha and E. gunawanae are morphologically similar to each other in having the AITO cephalic-sensory pore positioned far forward and opening anteriorly. Eviota tetha is known from lagoonal environments in Cenderawasih Bay and Raja Ampat, West Papua, and E. gunawanae is known only from deeper reefs (35–60 m) from Fakfak Regency, West Papua. The final two species are E. cometa which is known from Fiji and Tonga and possesses red bars crossing the caudal fin (but lost in preservative) and a 9/8 dorsal/anal-fin formula, and E. oculineata sp. nov., which is described as new from New Guinea and the Solomon Islands, and possesses an 8/7 dorsal/anal-fin formula and lacks red caudal bars. Eviota oculineata has been confused with E. cometa in the past.

HTML

XML

PDF

]]>
Research Article Fri, 27 Aug 2021 09:49:02 +0300
Resolving a century-old case of generic mistaken identity: polyphyly of Chitoniscus sensu lato resolved with the description of the endemic New Caledonia Trolicaphyllium gen. nov. (Phasmatodea, Phylliidae) https://zookeys.pensoft.net/article/66796/ ZooKeys 1055: 1-41

DOI: 10.3897/zookeys.1055.66796

Authors: Royce T. Cumming, Stephane Le Tirant, Thies H. Büscher

Abstract: With every molecular review involving Chitoniscus Stål, 1875 sensu lato samples from Fiji and New Caledonia revealing polyphyly, the morphology from these two distinct clades was extensively reviewed. Morphological results agree with all previously published molecular studies and therefore Trolicaphyllium gen. nov. is erected to accommodate the former Chitoniscus sensu lato species restricted to New Caledonia, leaving the type species Chitoniscus lobiventris (Blanchard, 1853) and all other Fijian species within Chitoniscus sensu stricto. Erection of this new genus for the New Caledonian species warrants the following new combinations: Trolicaphyllium brachysoma (Sharp, 1898), comb. nov., Trolicaphyllium erosus (Redtenbachher, 1906), comb. nov., and Trolicaphyllium sarrameaense (Größer, 2008a), comb. nov. Morphological details of the female, male, freshly hatched nymph, and egg are illustrated and discussed alongside the Chitoniscus sensu stricto in order to differentiate these two clades which have been mistaken as one for decades.

HTML

XML

PDF

]]>
Research Article Thu, 5 Aug 2021 19:38:02 +0300
Phylogenetic systematics of the genera of Thryptocerina Jeannel, 1949 and new species from New Caledonia (Coleoptera, Carabidae, Oodini) https://zookeys.pensoft.net/article/63775/ ZooKeys 1044: 375-425

DOI: 10.3897/zookeys.1044.63775

Authors: Kipling Will, Borislav Guéorguiev

Abstract: The Oodini precinctive to New Caledonia are reviewed with nine species recognized, of which seven are newly described in two genera. Five species are described in the genus Coptocarpus Chaudoir: C. microps sp. nov., C. erwini sp. nov., C. amieuensis sp. nov., C. magnus sp. nov., and C. lescheni sp. nov. In the genus Adelopomorpha Heller two species, A. tethys sp. nov. and A. tuberculata sp. nov., are described. In order to place cladistically the newly described species in a genus, a phylogenetic analysis of a matrix of 36 characters of adult morphology was conducted including exemplar species of three putative outgroup genera, six putative ingroup thryptocerine oodine genera, and all oodine species from New Caledonia. Results show support for Thryptocerina and monophyly of Adelopomorpha. Hoplolenus LaFerté-Sénectère is not monophyletic and Hoplolenus cyllodinus Fauvel is newly combined as Coptocarpus cyllodinus comb. nov. New Caledonian species of Coptocarpus form a clade, but the Australian species of the genus included in the analysis are rendered paraphyletic by African and Malagasy genera. Implications of this preliminary study for the classification of Oodini and trends in the evolution of the female reproductive tract are discussed. A key to the New Caledonian species of Oodini is provided.

HTML

XML

PDF

]]>
Research Article Wed, 16 Jun 2021 19:00:11 +0300
Hawaiian Paratachys Casey (Coleoptera, Carabidae): small beetles of sodden summits, stony streams, and stygian voids https://zookeys.pensoft.net/article/59674/ ZooKeys 1044: 229-268

DOI: 10.3897/zookeys.1044.59674

Authors: James K. Liebherr

Abstract: Five Hawaiian species of Paratachys Casey are revised, including four newly described: Paratachys terryli from Kauai; P. perkinsi from Moloka‘i; P. haleakalae from Maui; and P. aaa from Hawai‘i Island. A lectotype is designated for the fifth Hawaiian species currently combined with Paratachys, Tachys arcanicola Blackburn, 1878 of Oahu. Hawaiian Paratachys spp. known from more than one specimen exhibit some degree of ocular polymorphism, that variation being extreme in P. terryli where individuals range in ocular development from macrophthalmic with broadly convex eyes to microphthalmic with small, flat eyes. All Hawaiian Paratachys species comprise individuals with vestigial wings, with the exception of P. terryli, where a single macropterous, macrophthalmic female complements the other 18 brachypterous specimens. Based on a transformation series of characters from the male aedeagus, the biogeographic history of Hawaiian Paratachys is consistent with progressive colonization of the Hawaiian Island chain. Three of the species do not appear to represent species of conservation concern, with P. terryli and P. haleakalae known from terrestrial deep soil, litter, and streamside microhabitats in montane wet rain forest, and the troglobitic P. aaa occupying the dark zone of numerous, recently developed lava tube caves within the Mauna Loa and Kilauea volcanic massifs. The conservation status of the other two species is much more dire, with P. arcanicola of O‘ahu not seen in nature since the early 20th Century, and P. perkinsi known only from a single specimen fortuitously collected in 1894 near sea level on Moloka‘i.

HTML

XML

PDF

]]>
Research Article Wed, 16 Jun 2021 19:00:08 +0300
Taxonomy of three species of the genus Spinoncaea (Copepoda, Oncaeidae) in the North Pacific Ocean with focus on morphological variability https://zookeys.pensoft.net/article/64438/ ZooKeys 1043: 147-191

DOI: 10.3897/zookeys.1043.64438

Authors: Kyuhee Cho, Chailinn Park, Ruth Böttger-Schnack

Abstract: Three species of Spinoncaea Böttger-Schnack, 2003 are newly recorded in three locations of the equatorial and temperate Pacific Ocean collected by using a net of 60 μm mesh size. For all three species, morphological characters and patterns of ornamentation were analyzed in detail and illustrations of both sexes, also including form variants of the females, are provided. For the first time, information about the variability of various continuous (morphometric) characters are given, such as the spine lengths on the rami of the swimming legs or the proportions of urosomites. The complementary morphological descriptions of the Pacific specimens focus on similarities or modifications of characters as compared to earlier descriptions of these species from the type locality and various other localities. For S. ivlevi (Shmeleva, 1966), originally but insufficiently described from the Adriatic Sea, the Pacific material is similar in most aspects to the comprehensive redescription of the species from the Red Sea and from the type locality, except for a difference in the morphometry of the distal endopod segment on the antenna, which is discussed here. For S. tenuis Böttger-Schnack, 2003, and S. humesi Böttger-Schnack, 2003, the Pacific material mostly coincides with the characteristic features as described in the original account from the Red Sea. For all three species, differences and/or additions in ornamentation details were found in Pacific specimens (e.g., on the intercoxal sclerite of the first swimming leg or on the genital somite of the male) and females with aberrant morphology were detected. Genetic analyses based on 12S srRNA revealed for two species, S. ivlevi and S. humesi, little or no differences in genetic sequences between Pacific specimens and those recorded from the Mediterranean Sea, thus demonstrating that specimens from both locations are conspecific. For S. tenuis, for which no comparable genetic data are available, 12S srRNA amplification was unsuccessful as was the amplification of mitochondrial COI (barcoding) for all three species. The applicability of using COI amplification for barcoding of oncaeid copepods is discussed.

HTML

XML

PDF

]]>
Research Article Tue, 15 Jun 2021 12:16:23 +0300
The tree snail on Rota Island, Northern Mariana Islands, long identified as Partula gibba (Partulidae), is a different species https://zookeys.pensoft.net/article/56303/ ZooKeys 1037: 105-118

DOI: 10.3897/zookeys.1037.56303

Authors: David R. Sischo, Michael G. Hadfield

Abstract: Tree snails in the family Partulidae are widespread across the tropical Pacific, with endemic species occurring on most high islands. Partulid species have faced catastrophic range reductions and extinctions due primarily to introduced predators. Consequently, most extant species are threatened with imminent extinction. The U.S. administered Mariana Islands, consisting of Guam in the South and the Commonwealth of the Northern Mariana Islands (CNMI) in the north, historically harbored six endemic partulid species, half of which are thought to be extinct. While conducting a phylogenetic assessment of Partula gibba, an extant tree-snail with a range spanning at least seven islands within the archipelago, it was discovered that what has been identified as P. gibba on the island of Rota is a misidentified cryptic species. Here we use molecular phylogenetics, shell morphometrics and reproductive anatomy to describe it as a new species, Partula lutaensis sp. nov.. Because the new species has suffered population declines and has a restricted range, consisting solely of the small island of Rota, we highlight the urgent need for conservation measures.

HTML

XML

PDF

]]>
Research Article Mon, 17 May 2021 18:29:01 +0300
Tigriopus iranicus sp. nov., a new species of Harpacticidae (Copepoda, Crustacea) from Iran, with a redescription of T. raki Bradford, 1967 https://zookeys.pensoft.net/article/61584/ ZooKeys 1035: 115-144

DOI: 10.3897/zookeys.1035.61584

Authors: Fatemeh Nazari, Omid Mirshamsi, Pedro Martínez Arbizu

Abstract: The first representative of Tigriopus Norman, 1869 from the north-western Indian Ocean is described from rock pools on the Iranian coast. Tigriopus iranicus sp. nov. is distinguishable from its congeners by i) the possession of two maxillary endites, each with two setae; ii) a two-segmented mandibular endopod; iii) P1 enp-3 with one pinnate claw, a well-developed geniculate spine and a small seta; and iv) female P6 with two setae. Additionally, we present a complete redescription of Tigriopus raki Bradford, 1967 on the basis of paratype material and a key to the species of the genus.

HTML

XML

PDF

]]>
Research Article Tue, 27 Apr 2021 14:21:37 +0300
Seven new species of the Exocelina ekari group from New Guinea central and coastal mountains (Coleoptera, Dytiscidae, Copelatinae) https://zookeys.pensoft.net/article/61554/ ZooKeys 1026: 45-67

DOI: 10.3897/zookeys.1026.61554

Authors: Helena Shaverdo, Suriani Surbakti, Bob Sumoked, Michael Balke

Abstract: Seven new species of the genus Exocelina Broun, 1886 are described from three different mountain ranges of New Guinea: E. foja sp. nov., E. riberai sp. nov., E. apistefti sp. nov., and E. waaf sp. nov. from the Foja Mountains; E. hudsoni sp. nov. from the Cyclops Mountains; E. ekpliktiki sp. nov. and E. oraia sp. nov. from Wano Land. All of them are placed into the E. ekari group based on the structure of their male genitalia. The species are characteristic dytiscid elements of the fauna of northern cost and the western part of central orogen of New Guinea. Two taxonomic notes are presented: Exocelina athesphati is a correct name for the recently described Exocelina athesphatos Shaverdo et al., 2020; Exocelina bacchus Balke, nom. nov. is a replacement name for Exocelina bacchusi (Balke, 1998), formerly Copelatus (Papuadytes) bacchusi Balke, 1998, a junior homonym of Copelatus bacchusi Wewalka, 1981.

HTML

XML

PDF

]]>
Research Article Thu, 25 Mar 2021 16:00:39 +0200
A review of Copelatus diving beetles from the Solomon Islands, reporting the discovery of six new species (Coleoptera, Dytiscidae, Copelatinae) https://zookeys.pensoft.net/article/61478/ ZooKeys 1023: 81-118

DOI: 10.3897/zookeys.1023.61478

Authors: Jiří Hájek, Helena Shaverdo, Lars Hendrich, Michael Balke

Abstract: The first account of the genus Copelatus Erichson, 1832 in the Solomon Islands is provided, reporting 10 species for the Archipelago. Six of these are new to science: C. baranensis sp. nov., C. laevipennis sp. nov., C. urceolus sp. nov., and C. variistriatus sp. nov. from Guadalcanal and C. bougainvillensis sp. nov., and C. kietensis sp. nov. from Bougainville. Copelatus tulagicus Guignot, 1942, described from Tulaghi Island of the Solomons, is recorded from Guadalcanal and Santa Isabel for the first time. The widely distributed Australasian C. portior Guignot, 1956 is reported from the Solomon Islands (Guadalcanal and Ontong Java Atoll) for the first time. Two species from Guadalcanal remain unidentified since they are so far known only from a limited number of females.

HTML

XML

PDF

]]>
Research Article Thu, 11 Mar 2021 17:15:51 +0200
Three new species of the sea fan genus Leptogorgia (Octocorallia, Gorgoniidae) from the Gulf of California, Mexico https://zookeys.pensoft.net/article/50619/ ZooKeys 1017: 1-20

DOI: 10.3897/zookeys.1017.50619

Authors: Osvaldo Hernández, Jaime Gomez-Gutiérrez, Carlos Sánchez

Abstract: Three new sea fan species of Leptogorgia were discovered during multiple scuba diving expeditions along the Gulf of California coast and islands. Leptogorgia iridis sp. nov. is distributed in the southern region of the gulf (Mexican Province), inhabiting tropical rocky reefs of the Islas Marías Archipelago (Nayarit) and Bahía Banderas (Jalisco). This species has small colonies (< 7 cm height) with at least five clearly distinct chromotypes. Leptogorgia martirensis sp. nov. was found exclusively on the rocky reefs of San Pedro Mártir and San Esteban Islands located in the northern region of the Gulf of California (northern region of Cortez Province). Leptogorgia enrici sp. nov. is distributed from the south to the northern region of the Gulf of California (Cortez Province), inhabiting substrates of rocky reefs, sandy and pebbly sea floors. Comprehensive ecological diving expeditions to identify and classify octocorals in the Mexican Pacific (1995–2019) indicate that L. iridis sp. nov. and L. martirensis sp. nov. are likely to be micro-endemics and L. enrici sp. nov. is endemic to the Gulf of California, which defines their currently known biogeographic distribution ranges.

HTML

XML

PDF

]]>
Research Article Fri, 12 Feb 2021 23:53:15 +0200
A new species of Princaxelia from Shinkai Seep Field, Mariana Trench (Crustacea, Amphipoda, Pardaliscidae) https://zookeys.pensoft.net/article/59683/ ZooKeys 1015: 115-127

DOI: 10.3897/zookeys.1015.59683

Authors: Ko Tomikawa, Hiromi Kayama Watanabe, Katsuhiko Tanaka, Yasuhiko Ohara

Abstract: A new pardaliscid amphipod, Princaxelia marianaensis sp. nov., is described from a single female captured at the Shinkai Seep Field, Mariana Trench, from a depth of 5,689–5,683 m. A key to species of Princaxelia is provided. This is the first species of Princaxelia to be described from the Mariana Trench, and the second report of this genus from this region.

HTML

XML

PDF

]]>
Research Article Thu, 4 Feb 2021 19:03:09 +0200
Description of a new species, Sillago nigrofasciata sp. nov. (Perciformes, Sillaginidae) from the southern coast of China https://zookeys.pensoft.net/article/57302/ ZooKeys 1011: 85-100

DOI: 10.3897/zookeys.1011.57302

Authors: Jia-Guang Xiao, Zheng-Sen Yu, Na Song, Tian-Xiang Gao

Abstract: A new Sillago species, the black-banded sillago, Sillago nigrofasciata sp. nov., is described based on 302 specimens sampled from the southern coast of China. Morphological comparisons have been conducted between the new species and ten other Sillago species. The results show that the new species is characterized by a black mid-lateral band below the lateral line when fresh; other characteristics are similar to those of Sillago sihama but subtle differences exist on the swim bladder between Sillago nigrofasciata sp. nov. and S. sihama. A detailed description and illustrations are provided for the new species. The validity of this new species is also supported by a genetic comparison using sequences of the mitochondrial cytochrome c oxidase subunit I (COI) gene.

HTML

XML

PDF

]]>
Research Article Mon, 18 Jan 2021 14:11:21 +0200
Deep-sea clawed lobster Nephropsis stewarti Wood-Mason, 1872 species complex in the Indo-West Pacific (Crustacea, Decapoda, Nephropidae), with description of a new species https://zookeys.pensoft.net/article/59966/ ZooKeys 1008: 37-60

DOI: 10.3897/zookeys.1008.59966

Authors: Su-Ching Chang, Tin-Yam Chan, Appukuttannair Biju Kumar

Abstract: Nephropsis stewarti Wood-Mason, 1872 is the most common species of the deep-sea clawed lobster genus Nephropsis Wood-Mason, 1872 in the Indo-West Pacific. Morphological comparisons and genetic analyses of extensive material referred to this lobster revealed the presence of three species. The three species differ mainly in body size, development of the intermediate carina on the carapace, position of the lateral pair of rostral teeth, whether the pleonal tergum is granulate, and the spination on the large chelipeds. Nephropsis stewarti is restricted to the western central Indian Ocean, and a neotype is selected to fix its identity. The name Nephropsis grandis Zarenkov, 2006 is revived with neotype selection for the large form found in the West Pacific and northwestern Australia. The smaller form from southern Taiwan and the Philippines is described as Nephropsis pygmaea sp. nov.

HTML

XML

PDF

]]>
Research Article Thu, 31 Dec 2020 04:57:33 +0200
A new species of Egglestonichthys (Teleostei, Gobiiformes, Gobiidae) from Okinawa Island, Japan https://zookeys.pensoft.net/article/58874/ ZooKeys 1006: 91-98

DOI: 10.3897/zookeys.1006.58874

Authors: Kyoji Fujiwara, Toshiyuki Suzuki, Hiroyuki Motomura

Abstract: Egglestonichthys fulmen sp. nov. (Teleostei: Gobiidae) is described on the basis of a single specimen (21.7 mm in standard length) collected from 250 m depth off Okinawa Island, Ryukyu Islands, Japan. The new species is characterized by the following combination of characters: anal-fin rays I, 9; pectoral-fin rays 17, lower rays not free from membrane; longitudinal scale series 25; transverse scales 8; pre-dorsal-fin scale rows 8; cheek and opercle naked; pelvic frenum absent; caudal fin lanceolate, its length 32.2% of SL; interorbital width very narrow, 1.2% of HL (much narrower than pupil diameter); no spicules or odontoid processes on outer surface of gill arches; and body whitish, upper half with broken zigzag pattern of bright yellow patches and associated scattered black melanophores in fresh specimens (melanophores retained in preserved specimens). Several characters, including pectoral-fin ray count, interorbital width, and coloration uniquely distinguish the new species from congeners.

HTML

XML

PDF

]]>
Research Article Mon, 21 Dec 2020 18:34:56 +0200
On some new species of Stenheliinae Brady, 1880 (Copepoda, Harpacticoida, Miraciidae) from north-western Mexico, with the proposal of Lonchoeidestenhelia gen. nov. https://zookeys.pensoft.net/article/52906/ ZooKeys 987: 41-79

DOI: 10.3897/zookeys.987.52906

Authors: Samuel Gómez

Abstract: Quarterly sampling campaigns during 2019 to study the diversity of meiofauna in a polluted estuary in northwestern Mexico revealed the subfamily Stenheliinae Brady, 1880 as one of the most important contributors to the diversity of benthic harpacticoids. Two new stenheliin species are described here. One of them was assigned to the, so far, monotypic genus Lonchoeidestenhelia gen. nov. defined by the autapomorphic modified proximal outer spinules on the sigmoid process of the male P2 ENP2. The other species was assigned to Willenstenhelia Karanovic and Kim, 2014. Lonchoeidestenhelia gen. nov. shares the armature formula of the P1 EXP2 with Stenhelia, Anisostenhelia, and Beatricella, but seems to bear a sister-group relationship with the former two genera by the loss of one inner seta on the P2–P3 EXP3, the presence of two outer spine-like elements on the male P5 EXP, and the displacement of the outer spine and medial and inner distal setae of P2 ENP3, to an apical and subapical inner position, respectively, but is more closely related to Anisostenhelia by the overall shape of the male P2 ENP2. Willenstenhelia reducta sp. nov. is attributed to a group of species composed of Wi. minuta, Wi. urania, and Wi. terpsichore characterized by the strongly reduced inner seta of the female P5 baseoendopod, but differs in the discrete female P5 baseoendopods and in the presence of one outer seta only on that segment. Willenstenhelia reducta sp. nov. is defined here by the autapomorphic loss of the outermost seta of the female P5 baseoendopod.

HTML

XML

PDF

]]>
Research Article Fri, 6 Nov 2020 18:28:20 +0200
A new species of the genus Amphicteis Grube, 1850 (Annelida, Ampharetidae) from the Yellow Sea, China, together with a redescription of A. dalmatica Hutchings & Rainer, 1979 https://zookeys.pensoft.net/article/49934/ ZooKeys 988: 1-15

DOI: 10.3897/zookeys.988.49934

Authors: Weina Wang, Jixing Sui, Xinzheng Li, Pat Hutchings, João Miguel de Matos Nogueira

Abstract: A new species of the ampharetid genus Amphicteis, A. hwanghaiensis sp. nov., is described based on material from the Yellow Sea. The new species is characterized by the possession of long, stout, golden paleae with blunt tips, digitiform rudimentary notopodia on the abdominal uncinigers, uncini with a subrostral process, and a narrow rectangular hump separating branchial groups. Amphicteis dalmatica was redescribed from type materials at the Australian Museum, Sydney, and the differences between A. dalmatica and A. hwanghaiensis sp. nov. are discussed. A key to distinguish Amphicteis species described or reported in Western Pacific waters is provided.

HTML

XML

PDF

]]>
Research Article Fri, 6 Nov 2020 11:36:48 +0200
First detection of an ocellate octopus in the Revillagigedos ecoregion, a biodiversity hotspot located in the Tropical East Pacific Province https://zookeys.pensoft.net/article/53250/ ZooKeys 986: 81-100

DOI: 10.3897/zookeys.986.53250

Authors: Alejandra Valdez-Cibrián, Mariana Díaz-Santana-Iturrios, Víctor Landa-Jaime, Jesús Emilio Michel-Morfín

Abstract: The biodiversity of mollusks, particularly cephalopods, has not been exhaustively determined in the Revillagigedos ecoregion, which is a biodiversity hotspot for several marine groups located in the Tropical East Pacific Province. In our study, we detected and examined ocellate octopuses from Socorro and Clarion Islands, and determined their identity using morphological criteria and molecular data from two mitochondrial genes (COIII and COI). The taxon identified was Octopus oculifer, a species considered endemic to the Galapagos Archipelago. In addition, according to our analyses, O. mimus, O. hubbsorum and O. oculifer are very closely related and may represent a species complex comprised of three morphotypes. We found that the evolutionary relationships among octopuses are not determined by the presence of ocelli. This study is the first to report a clade represented by ocellate and non-ocellate species, in addition, the identity of cephalopods in the Revillagigedos was determined with analytical support.

HTML

XML

PDF

]]>
Research Article Thu, 5 Nov 2020 20:47:29 +0200
A revision of the genus Psammogorgia Verrill, 1868 (Cnidaria, Anthozoa, Octocorallia) in the tropical eastern Pacific Ocean https://zookeys.pensoft.net/article/54846/ ZooKeys 961: 1-30

DOI: 10.3897/zookeys.961.54846

Authors: Odalisca Breedy, Hector M. Guzman

Abstract: The species of the genus Psammogorgia Verrill, 1868 from the shallow waters of the tropical eastern Pacific were mainly described from 1846 to 1870. Very few contributions were published subsequently. Recently, the genus was revisited with the addition of two new species. However, a comprehensive generic study is still missing for the eastern Pacific. Psammogorgia is characterised by having axes cores without mineralisation, mainly coarse irregular spindles and thorny, leafy or tuberculate clubs coenenchymal sclerites and the anthocodial armature with distinct collaret and points arrangements. Herein a taxonomic revision of the genus is presented based on type material which was morphologically analysed and illustrated using optical and scanning electron microscopy. Comparative character tables are provided for comparison among species in the genus, along with a taxonomic key. Moreover, the taxonomic status of each species was analysed. The genus Psammogorgia comprises six valid species and two varieties, and three lectotypes and a new combination are proposed to establish the taxonomic status of these species.

HTML

XML

PDF

]]>
Review Article Wed, 19 Aug 2020 22:49:52 +0300
Two new species of the Exocelina ekari group from New Guinea with strongly modified male antennae (Coleoptera, Dytiscidae, Copelatinae) https://zookeys.pensoft.net/article/55007/ ZooKeys 960: 63-78

DOI: 10.3897/zookeys.960.55007

Authors: Helena Shaverdo, Suriani Surbakti, Bob Sumoked, Michael Balke

Abstract: Two new species of the genus Exocelina Broun, 1886: E. athesphatos sp. nov. and E. tsinga sp. nov. are described from New Guinea and placed into the E. ekari group based on the structure of their male genitalia. The two species are very similar with respect to their external morphology and characterised by almost identical, strongly modified male antennae. However, they can easily be separated by the shape and setation of the median lobe and paramere. Based on morphological similarity and results of a molecular phylogenetic analysis, we suggest these are sister species. Both of them have been collected on the southern slopes of the Central Range (the spine of New Guinea), with a distance of ca. 380 km straight line between the collecting localities.

HTML

XML

PDF

]]>
Research Article Mon, 17 Aug 2020 22:38:05 +0300
Description of 47 new species of the New Caledonian endemic caddisfly genus Agmina Ward & Schefter (Trichoptera, Ecnomidae) https://zookeys.pensoft.net/article/51592/ ZooKeys 956: 49-162

DOI: 10.3897/zookeys.956.51592

Authors: Marianne Espeland, Tin Sjöberg, Kjell Arne Johanson

Abstract: New Caledonia has a rich Trichoptera fauna with over 200 known species, most of them endemic. The total diversity has been estimated as high as 300 to 600 species. The endemic genus Agmina Ward & Schefter (Ecnomidae, Trichoptera) includes 28 described species. Based on male genitalia morphology and previously published molecular data another 47 new species in the genus are described, namely Agmina tuberosa sp. nov., A. semiovale sp. nov., A. rocheta sp. nov., A. tenuisa sp. nov., A. multidentata sp. nov., A. cornuta sp. nov., A. sagittata sp. nov., A. circulata sp. nov., A. digitata sp. nov., A. longispina sp. nov., A. magnahamata sp. nov., A. longicordata sp. nov., A. campanula sp. nov., A. semicampanula sp. nov., A. cunicula sp. nov., A. cerritula sp. nov., A. monstrosa sp. nov., A. rectangulata sp. nov., A. chela sp. nov., A. piscaria sp. nov., A. amplexa sp. nov., A. caraffa, sp. nov., A. rostrata sp. nov., A. dathioensis sp. nov., A. rougensis sp. nov., A. viklundi sp. nov., A. lata sp. nov., A. falx sp. nov., A. guttula sp. nov., A. amieuensis sp. nov., A. spina sp. nov., A. complexa sp. nov., A. dognyensis sp. nov., A. mana sp. nov., A. anterohamata sp. nov., A. curvatacua sp. nov., A. recurvata sp. nov., A. taoensis sp. nov., A. triangulata sp. nov., A. bleuensis sp. nov., A. touhoensis sp. nov., A. wardi sp. nov., A. parallela sp. nov., A. christinae sp. nov., A. brevis sp. nov., A. ninguana sp. nov., and A. scopula sp. nov. Additionally, new records are provide for the species A. acula Ward, 2003, A. artarima Ward & Schefter, 2000, A. berada Ward & Schefter, 2000, A. bimaculata Ward & Schefter, 2000, A. cheirella Ward, 2003, A. comata Ward, 2003, A. diriwi Ward & Schefter, 2000, A. hamata Ward & Schefter, 2000, A. hastata Ward & Schefter, 2000, A. hirta Ward & Schefter, 2000, A. jepiva Ward & Schefter, 2000, A. joycei Ward & Schefter, 2000, A. kapiwa Ward & Schefter, 2000, A. kara Ward & Schefter, 2000, A. mariae Ward & Schefter, 2000, A. nodosa Ward, 2003, A. panda Ward & Schefter, 2000, A. padi Ward & Schefter, 2000, A. parie Ward & Schefter, 2000, A. rhara Ward & Schefter, 2000, A. urugi Ward & Schefter, 2000, and A. vuegi Ward & Schefter, 2000. With a total of 75 described species Agmina is one of the largest animal radiations in New Caledonia. Nothing is known about the early stages of any of the species in this genus.

HTML

XML

PDF

]]>
Research Article Thu, 6 Aug 2020 16:43:31 +0300
Overlooked but not forgotten: the first new extant species of Hawaiian land snail described in 60 years, Auriculella gagneorum sp. nov. (Achatinellidae, Auriculellinae) https://zookeys.pensoft.net/article/50669/ ZooKeys 950: 1-31

DOI: 10.3897/zookeys.950.50669

Authors: Norine W. Yeung, John Slapcinsky, Ellen E. Strong, Jaynee R. Kim, Kenneth A. Hayes

Abstract: Recent surveys of Oahu’s Waianae Mountains uncovered a small, previously undescribed species of Auriculella that is conchologically similar to the three members of the A. perpusilla group all of which are endemic to the Koolau Mountain Range. However, sequence data demonstrate that the perpusilla group is not monophyletic. Moreover, the new species is not closely related to A. perpusilla or A. perversa, the only extant members of the group, but instead is sister to A. tenella, a species from the high spired A. castanea group. A neotype is designated for A. auricula, the type species of Auriculella; all members of the conchologically similar perpusilla group are anatomically redescribed; and lectotypes designated for A. minuta, A. perversa, and A. tenella. The new species is described and compared to the type of the genus, members of the perpusilla group, and the genetically similar species A. tenella.

HTML

XML

PDF

]]>
Research Article Mon, 20 Jul 2020 12:22:30 +0300
New data on the aphid (Hemiptera, Aphididae) fauna of New Caledonia: some new biosecurity threats in a biodiversity hotspot https://zookeys.pensoft.net/article/47785/ ZooKeys 943: 53-89

DOI: 10.3897/zookeys.943.47785

Authors: Christian Mille, Hervé Jourdan, Sylvie Cazères, Eric Maw, Robert Foottit

Abstract: Thirty-three species of aphids are now established in New Caledonia. All species appear to have been introduced accidentally by human activity in the last century. Here, 17 aphid species are recorded for the first time: Aphis eugeniae, Aphis glycines, Aphis odinae, Aulacorthum solani, Brachycaudus helichrysi, Cerataphis orchidearum, Greenidea psidii, Hyperomyzus carduellinus, Hysteroneura setariae, Lipaphis pseudobrassicae, Micromyzus katoi, Myzus ornatus, Pentalonia caladii, Rhopalosiphum nymphaeae, Rhopalosiphum rufiabdominale, Schizaphis rotundiventris, and Tetraneura fusiformis. Thirteen more species are also more or less regularly intercepted at the borders through biosecurity surveys, without further establishment. This demonstrates that aphids represent a major biosecurity threat, including a threat as potential plant virus vectors. The reinforcement of biosecurity is a priority for such biodiversity hotspots, from the perspectives of both agriculture and the native environment. Prioritisation and promotion of local development of vegetable and fruit production, rather than their risky importation from abroad, is desirable. Such an approach also should be promoted and extended to other Pacific islands, which all share the lack of native aphid fauna and their associated plant disease vector risks.

HTML

XML

PDF

]]>
Checklist Mon, 22 Jun 2020 16:48:12 +0300
Two new species of Plectranthias (Teleostei, Serranidae, Anthiadinae) from mesophotic coral ecosystems in the tropical Central Pacific https://zookeys.pensoft.net/article/50243/ ZooKeys 941: 145-161

DOI: 10.3897/zookeys.941.50243

Authors: Bart Shepherd, Tyler A. Y. Phelps, Hudson T. Pinheiro, Claudia R. Rocha, Luiz A. Rocha

Abstract: Two new species of Plectranthias perchlets are described, collected from mesophotic coral ecosystems in French Polynesia and the Republic of the Marshall Islands, in the tropical Central Pacific. Plectranthias polygonius sp. nov. was collected at a depth of 105 m in Tahiti, French Polynesia, and 120 m in Maloelap Atoll, Republic of the Marshall Islands. It was also observed in Moorea and Rangiroa (French Polynesia), and at Majuro and Erikub Atolls, Republic of the Marshall Islands. Plectranthias hinano sp. nov. was collected at a depth of 90–98 m in Tahiti, French Polynesia, and observed in Moorea. The barcode fragment of the cytochrome oxidase I gene of Plectranthias polygonius sp. nov. does not closely match any published sequence of Plectranthias, with approximately 15% uncorrected divergence from several species. Plectranthias polygonius sp. nov. can be distinguished from all of its congeners by coloration and morphology. The barcode fragment of the COI gene of Plectranthias hinano sp. nov. is closest to Plectranthias bennetti, with 5.4% uncorrected divergence. Plectranthias hinano sp. nov. is also distinguished from all of its congeners by morphology, and a coloration that includes two indistinct black spots along the base of the dorsal-fin, and transparent yellow dorsal and anal fin membranes. With this publication, the genus Plectranthias now comprises 58 valid species, with representatives from tropical to temperate waters of the Atlantic, Pacific, and Indian oceans. These two new discoveries add to the growing body of research highlighting the rich biodiversity of mesophotic ecosystems.

HTML

XML

PDF

]]>
Research Article Tue, 16 Jun 2020 20:05:10 +0300
Hungry scale worms: Phylogenetics of Peinaleopolynoe (Polynoidae, Annelida), with four new species https://zookeys.pensoft.net/article/48532/ ZooKeys 932: 27-74

DOI: 10.3897/zookeys.932.48532

Authors: Avery S. Hatch, Haebin Liew, Stéphane Hourdez, Greg W. Rouse

Abstract: Polynoidae Kinberg, 1856 has five branchiate genera: Branchipolynoe Pettibone, 1984, Branchinotogluma Pettibone, 1985, Branchiplicatus Pettibone, 1985, Peinaleopolynoe Desbruyères & Laubier, 1988, and Thermopolynoe Miura, 1994, all native to deep-sea, chemosynthetic-based habitats. Of these, Peinaleopolynoe has two accepted species; Peinaleopolynoe sillardi Desbruyères & Laubier, 1988 (Atlantic Ocean) and Peinaleopolynoe santacatalina Pettibone, 1993 (East Pacific Ocean). The goal of this study was to assess the phylogenetic position of Peinaleopolynoe, utilizing DNA sequences from a broad sampling of deep-sea polynoids. Representatives from all five branchiate genera were included, several species of which were sampled from near the type localities; Branchinotogluma sandersi Pettibone, 1985 from the Galápagos Rift (E/V “Nautilus”); Peinaleopolynoe sillardi from organic remains in the Atlantic Ocean; Peinaleopolynoe santacatalina from a whalefall off southern California (R/V “Western Flyer”) and Thermopolynoe branchiata Miura, 1994 from Lau Back-Arc Basin in the western Pacific (R/V “Melville”). Phylogenetic analyses were conducted using mitochondrial (COI, 16S rRNA, and CytB) and nuclear (18S rRNA, 28S rRNA, and H3) genes. The analyses revealed four new Peinaleopolynoe species from the Pacific Ocean that are formally described here: Peinaleopolynoe orphanae Hatch & Rouse, sp. nov., type locality Pescadero Basin in the Gulf of California, Mexico (R/V “Western Flyer”); Peinaleopolynoe elvisi Hatch & Rouse, sp. nov. and Peinaleopolynoe goffrediae Hatch & Rouse, sp. nov., both with a type locality in Monterey Canyon off California (R/V “Western Flyer”) and Peinaleopolynoe mineoi Hatch & Rouse, sp. nov. from Costa Rica methane seeps (R/V “Falkor”). In addition to DNA sequence data, the monophyly of Peinaleopolynoe is supported by the presence of ventral papillae on segments 12–15. The results also demonstrated the paraphyly of Branchinotogluma and Lepidonotopodium Pettibone, 1983 and taxonomic revision of these genera is required. We apply the subfamily name Lepidonotopodinae Pettibone 1983, for the clade comprised of Branchipolynoe, Branchinotogluma, Bathykurila, Branchiplicatus, Lepidonotopodium, Levensteiniella Pettibone, 1985, Thermopolynoe, and Peinaleopolynoe.

HTML

XML

PDF

]]>
Research Article Tue, 12 May 2020 12:57:50 +0300
Geographic boundaries and natural history notes of the microendemic endangered frog Eupsophus migueli Formas, 1977 (Alsodidae) in the Mahuidanche Range, southern Chile https://zookeys.pensoft.net/article/35984/ ZooKeys 929: 79-92

DOI: 10.3897/zookeys.929.35984

Authors: César C. Cuevas, Rocío Sanhueza

Abstract: Eupsophus migueli is considered a microendemic endangered species inhabiting the temperate Nothofagus forests of the Mahuidanche Range of southern Chile. However, this categorization is based on scarce data about its distribution and natural history. In order to assess these parameters, this article reports new geographic records obtained through intensive fieldwork between 2011 and 2016. Considering this, an updated distribution map for E. migueli is proposed, and new data about natural history traits and habitat use are provided. The information obtained in this study is discussed considering the zoogeographical importance of E. migueli, and confirms the species IUCN conservation status.

HTML

XML

PDF

]]>
Research Article Wed, 22 Apr 2020 10:55:51 +0300
Epimeria liui sp. nov., a new calcified amphipod (Amphipoda, Amphilochidea, Epimeriidae) from a seamount of the Caroline Plate, NW Pacific https://zookeys.pensoft.net/article/49141/ ZooKeys 922: 1-11

DOI: 10.3897/zookeys.922.49141

Authors: Yanrong Wang, Chaodong Zhu, Zhongli Sha, Xianqiu Ren

Abstract: A calcified individual of Epimeria Costa, 1851 collected from an unnamed seamount of the Caroline Plate, NW Pacific, is recognized as new to science herein. This increases the number of known Epimeria species of the North Pacific to nine. Epimeria liui sp. nov. differs from its similar congeners by having a rostrum hardly reaching to the end margin of first peduncular article of antenna 1, the presence of large pyriform eyes, the size-increasing mid-dorsal teeth starting from pereonite 6 to pleonite 2, the projection on coxa 5 not extending to epimeral plate 1, and by having a nearly quadrate telson notched medially. To facilitate identification the new species is included in a key to Pacific species of Epimeria.

HTML

XML

PDF

]]>
Research Article Wed, 25 Mar 2020 15:06:31 +0200
Twenty-six new species of Hoploscopa (Lepidoptera, Crambidae) from South-East Asia revealed by morphology and DNA barcoding https://zookeys.pensoft.net/article/36563/ ZooKeys 907: 1-99

DOI: 10.3897/zookeys.907.36563

Authors: Théo Léger, Christian Kehlmaier, Charles S. Vairappan, Matthias Nuss

Abstract: Hoploscopa Meyrick (Lepidoptera: Crambidae) is a fern-feeding genus found in montane areas of South-East Asia and Melanesia, eastwards up to the Samoan Islands. It includes sixteen described species, with at least 70 further undescribed species known from scientific collections. An iterative approach including morphological and molecular characters was used in order to explore the diversity of Hoploscopa. The hitherto described species are revised, and descriptions authored by T. Léger and M. Nuss are provided for an additional 26 new species: H. agtuuganonensis sp. nov., H. albipuncta sp. nov., H. albomaculata sp. nov., H. anacantha sp. nov., H. boleta sp. nov., H. cynodonta sp. nov., H. danaoensis sp. nov., H. gombongi sp. nov., H. gracilis sp. nov., H. ignitamaculae sp. nov., H. isarogensis sp. nov., H. jubata sp. nov., H. kelama sp. nov., H. kinabaluensis sp. nov., H. mallyi sp. nov., H. marijoweissae sp. nov., H. matheae sp. nov., H. niveofascia sp. nov., H. pangrangoensis sp. nov., H. parvimacula sp. nov., H. pseudometacrossa sp. nov., H. sepanggi sp. nov., H. sumatrensis sp. nov., H. titika sp. nov., H. tonsepi sp. nov., H. ypsilon sp. nov. Using a protocol specific for the amplification of DNA from old museum specimens, we recovered 101 COI barcodes for all but one of the newly described species, with 76 being barcode compliant (>487 bp). Species delimitation analyses suggest cryptic diversity, with six cases reflecting allopatric divergence, and two further cases found in sympatry.

HTML

XML

PDF

]]>
Research Article Wed, 29 Jan 2020 14:45:22 +0200
Leucosolenia qingdaoensis sp. nov. (Porifera, Calcarea, Calcaronea, Leucosolenida, Leucosoleniidae), a new species from China https://zookeys.pensoft.net/article/47164/ ZooKeys 906: 1-11

DOI: 10.3897/zookeys.906.47164

Authors: Yan-Ling Chu, Lin Gong, Xin-Zheng Li

Abstract: A new species of Leucosoleniidae, Leucosolenia qingdaoensis sp. nov., is described. This new species was collected in a scallop-breeding pond from the Yellow Sea and preserved in 75% ethanol. This sponge consists of a dense reticulation of ascon tubes, with the surface minutely hispid and the consistency soft and fragile. Spiculation of the new species consists of diactines, which are smooth, straight or sometimes slightly curved, triactines of two types, and tetractines with short and curved apical actines; spiculation also slightly overlaps and is somewhat irregularly assembled. Together these form a thin layer of skeleton, with a small number of cells, which results in a transparent, white sponge. As a typical asconoid feature, all internal cavities of the sponge are lined with choanocytes, and there is no fully developed inhalant system. Comparisons with other Leucosolenia reported from the Pacific Ocean are also made.

HTML

XML

PDF

]]>
Research Article Wed, 22 Jan 2020 20:20:17 +0200
Description of Seba longimera sp. nov. from hydrothermal vents in the Okinawa Trough, Northwest Pacific (Amphipoda, Amphilochoidea, Sebidae) https://zookeys.pensoft.net/article/39442/ ZooKeys 899: 141-149

DOI: 10.3897/zookeys.899.39442

Authors: Yanrong Wang, Chaodong Zhu, Zhongli Sha, Xianqiu Ren

Abstract: Seba longimera sp. nov., of the family Sebidae Walker, 1908, is described from hydrothermal vents in Okinawa Trough. Other two congenic species, S. bathybia Larsen, 2007 and S. profundus Shaw, 1989, are also reported from these hydrothermal vents, but the new species can be readily distinguished from them in having the merus of pereopods 5 and 6 extending beyond distal margin of carpus, coxa 4 smaller than coxae 2 and 3, and coxa 5 with the posterior lobe larger than the anterior one, rather than equilobate.

HTML

XML

PDF

]]>
Research Article Thu, 12 Dec 2019 15:17:34 +0200
Holothuria (Mertensiothuria) viridiaurantia sp. nov. (Holothuriida, Holothuriidae), a new sea cucumber from the Eastern Pacific Ocean revealed by morphology and DNA barcoding https://zookeys.pensoft.net/article/36013/ ZooKeys 893: 1-19

DOI: 10.3897/zookeys.893.36013

Authors: Giomar Helena Borrero-Pérez, María Juliana Vanegas-González

Abstract: Holothuria (Mertensiothuria) viridiaurantia sp. nov. is described based on specimens from rocky reefs of northern Chocó in the Colombian Pacific Ocean; however, it also occurs along the Eastern Pacific Ocean from Mexico and Panama. Although specimens from Mexico and Panama were previously identified as Holothuria (Mertensiothuria) hilla Lesson, 1830 the new species is easily distinguished morphologically and via mtDNA. In terms of morphology, the species can be identified by its olive-green background and white-orange papillae and tentacles, larger tentacles with deep indentations and also by larger buttons on the dorsal and ventral body wall, papillae and tube feet; large, thick and rough tentacle rods, and the absence of ossicles in the longitudinal muscles. The new species is included in the subgenus Mertensiothuria considering molecular evidence.

HTML

XML

PDF

]]>
Research Article Mon, 2 Dec 2019 15:50:01 +0200
A new species in the genus Acartia Dana, 1846 (Crustacea, Copepoda, Calanoida, Acartiidae) from the South Pacific coastal waters of Nadi Bay, Fiji https://zookeys.pensoft.net/article/38369/ ZooKeys 893: 69-89

DOI: 10.3897/zookeys.893.38369

Authors: Seunghan Lee, Ho Young Soh, Wonchoel Lee

Abstract: A new species in the genus Acartia, Acartia nadiensis sp. nov., is described from Fijian coastal waters. This species belongs to the subgenus Odontacartia based on the following morphological features: presence of a rostral filaments, a pointed process on the last prosomite, a serrated terminal spine on female P5, and the absence of a protrusion on the basis of the male right P5. This new species can be differentiated from its congeners by the combination of the absence of a spine on the first segment of the antennules, the short outer seta of female P5, and a medial spine on the exp-2 of the left male P5. Phylogenetic analyses using mitochondrial COI partial sequences show that the new species is distinct from its congeners.

HTML

XML

PDF

]]>
Research Article Mon, 2 Dec 2019 15:05:48 +0200
Parasitic nematodes of marine fishes from Palmyra Atoll, East Indo-Pacific, including a new species of Spinitectus (Nematoda, Cystidicolidae) https://zookeys.pensoft.net/article/38447/ ZooKeys 892: 1-26

DOI: 10.3897/zookeys.892.38447

Authors: David González-Solís, Lilia C. Soler-Jiménez, M. Leopoldina Aguirre-Macedo, John P. Mclaughlin, Jenny C. Shaw, Anna K. James, Ryan F. Hechinger, Armand M. Kuris, Kevin D. Lafferty, Víctor M. Vidal-Martínez

Abstract: Here, we present the results of a taxonomic survey of the nematodes parasitizing fishes from the lagoon flats of Palmyra Atoll, Eastern Indo-Pacific. We performed quantitative parasitological surveys of 653 individual fish from each of the 44 species using the intertidal sand flats that border the atoll’s lagoon. We provide morphological descriptions, prevalence, and mean intensities of the recovered seven species of adult nematode (Pulchrascaris chiloscyllii, Capillariidae gen. sp., Cucullanus bourdini, Cucullanus oceaniensis, Pseudascarophis sp., Spinitectus (Paraspinitectus) palmyraensis sp. nov., Philometra pellucida) and three larval stages (Pulchrascaris sp., Hysterothylacium sp., Cucullanus sp.). We recorded: Pulchrascaris chiloscyllii from Carcharhinus melanopterus; Capillariidae gen. sp. from Chaetodon lunula, Lutjanus fulvus, and Ellochelon vaigiensis; Cucullanus bourdini from Arothron hispidus; Cucullanus oceaniensis from Abudefduf sordidus; Pseudascarophis sp. from Chaetodon auriga, Chaetodon lunula, and Mulloidichthys flavolineatus; Spinitectus (Paraspinitectus) palmyraensis sp. nov. from Albula glossodonta; Philometra pellucida from Arothron hispidus; and three larval forms, Pulchrascaris sp. from Acanthurus triostegus, Acanthurus xanthopterus, Rhinecanthus aculeatus, Platybelone argalus, Carangoides ferdau, Carangoides orthogrammus, Caranx ignobilis, Caranx melampygus, Caranx papuensis, Chaetodon auriga, Chanos chanos, Amblygobius phalaena, Asterropteryx semipunctata, Valencienea sexguttata, Kyphosus cinerascens, Lutjanus fulvus, Lutjanus monostigma, Ellochelon vaigiensis, Mulloidichthys flavolineatus, Upeneus taeniopterus, Gymnothorax pictus, Abudefduf septemfasciatus, Abudefduf sordidus, and Stegastes nigricans; Hysterothylacium sp. type MD from Acanthurus triostegus, Carangoides ferdau, Chaetodon lunula, Chanos chanos, Kyphosus cinerascens, Abudefduf sordidus, and Arothron hispidus; and Cucullanus sp. from Caranx ignobilis. Spinitectus (Paraspinitectus) palmyraensis sp. nov. (Cystidicolidae) is described from the intestine of roundjaw bonefish Albula glossodonta. All the nematode species reported in this study represent new geographical records. We discuss how our survey findings compare to other areas of the Indo-Pacific, and the way the relatively numerical dominance of trophically transmitted larval stages likely reflect the intact food web of Palmyra Atoll, which includes a large biomass of large-bodied top predator sharks and ray-finned fishes.

HTML

XML

PDF

]]>
Checklist Wed, 27 Nov 2019 14:58:23 +0200
Morphology and phylogenetic analysis of two new deep-sea species of Chrysogorgia (Cnidaria, Octocorallia, Chrysogorgiidae) from Kocebu Guyot (Magellan seamounts) in the Pacific Ocean https://zookeys.pensoft.net/article/34759/ ZooKeys 881: 91-107

DOI: 10.3897/zookeys.881.34759

Authors: Yu Xu, Yang Li, Zifeng Zhan, Kuidong Xu

Abstract: Two new species of Chrysogorgia Duchassaing & Michelotti, 1864 collected from Kocebu Guyot in the Magellan seamounts of the Pacific Ocean are described and illustrated: Chrysogorgia ramificans sp. nov. collected from a depth of 1831 m and Chrysogorgia binata sp. nov. collected from a depth of 1669 m. Chrysogorgia ramificans sp. nov. belongs to the Chrysogorgia “group A, Spiculosae” with rods distributed in body wall and tentacles, and C. binata sp. nov. belongs to the “group C, Squamosae typicae” with rods and/or spindles not present but only scales. Chrysogorgia ramificans sp. nov. differs from congeners by its main stem with 2/5R branching sequence at the bottom forming two large bottlebrush-shaped branches with 1/3R branching sequence at the top. Chrysogorgia binata sp. nov. is similar to C. scintillans Bayer & Stefani, 1988, but differs by its larger polyps, larger sclerites in the body wall, and different scales in the upper part of polyps. The mtMutS genetic distances between C. ramificans sp. nov. and C. binata sp. nov. and congeners are in the range of 0.33%–2.28% and 0.33%–2.94%, respectively, while the intraspecific distances are in the range of 0–0.16%. Molecular phylogenetic analysis indicates that C. ramificans sp. nov. is clustered with C. monticola Cairns, 2007 and C. binata sp. nov. is clustered with C. chryseis Bayer & Stefani, 1988, both with high support indicating close relationships.

HTML

XML

PDF

]]>
Research Article Thu, 17 Oct 2019 14:19:43 +0300
A new species of Claviramus (Annelida, Sabellida, Sabellidae) from the Ariake Inland Sea, Kyushu, Japan https://zookeys.pensoft.net/article/36281/ ZooKeys 880: 25-32

DOI: 10.3897/zookeys.880.36281

Authors: Eijiroh Nishi, Katsuhiko Tanaka, María Ana Tovar-Hernández

Abstract: A new species of the sabellid polychaete genus Claviramus Fitzhugh, 2002, is described from Ariake Inland Sea, Kyushu, Japan. Claviramus is a small genus, composed of three species worldwide. Its distinctive feature is the presence of foliaceous flanges at the distal ends of the radioles. Claviramus kyushuensis sp. nov. here described is characterized by the presence of a glandular ridge on chaetiger 2, glandular shields on the abdomen, thoracic uncini bidentate, and the presence of a short, distal filament in some radioles. A key and a comparative table of diagnostic characters for species of Claviramus are provided.

HTML

XML

PDF

]]>
Research Article Mon, 14 Oct 2019 13:51:36 +0300
Nine new species groups, 15 new species, and one new subspecies of New Guinea diving beetles of the genus Exocelina Broun, 1886 (Coleoptera, Dytiscidae, Copelatinae) https://zookeys.pensoft.net/article/37403/ ZooKeys 878: 73-143

DOI: 10.3897/zookeys.878.37403

Authors: Helena Shaverdo, Suriani Surbakti, Evie L. Warikar, Katayo Sagata, Michael Balke

Abstract: Nine new species groups of Exocelina Broun, 1886 from New Guinea are introduced with keys to their representatives. Four groups are monotypic and include three new species: the E. aipomek group, the E. koroba group: E. koroba sp. nov., the E. mekilensis group: E. mekilensis sp. nov., and the E. morobensis group: E. morobensis sp. nov. The remaining five species groups include 18 species with 12 new species and one new subspecies: the E. bacchusi group: E. akameku sp. nov., E. oiwa sp. nov., E. oksibilensis sp. nov., and E. bacchusi herzogensis ssp. nov.; the E. jaseminae group: E. aseki sp. nov., E. kailaki sp. nov., and E. pseudojaseminae sp. nov.; the E. larsoni group: E. warahulenensis sp. nov.; the E. takime group: E. mianminensis sp. nov.; and the E. warasera group: E. haia sp. nov., E. kobau sp. nov., E. pulchella sp. nov., and E. warasera sp. nov. Diagnoses of five already described species of these groups are provided, as well as comparatives notes on all species. Exocelina santimontis (Balke, 1998) syn. nov. is a junior synonym of E. aipomek (Balke, 1998). Data on the distribution of the species are given, showing that most of the species of these groups occur in the Papua New Guinea.

HTML

XML

PDF

]]>
Research Article Mon, 7 Oct 2019 16:55:42 +0300
Revision of the genus Ceriantheomorphe (Cnidaria, Anthozoa, Ceriantharia) with description of a new species from the Gulf of Mexico and northwestern Atlantic https://zookeys.pensoft.net/article/35835/ ZooKeys 874: 127-148

DOI: 10.3897/zookeys.874.35835

Authors: Celine S. S. Lopes, Hellen Ceriello, André C. Morandini, Sérgio N. Stampar

Abstract: The present study presents a revision of the genus Ceriantheomorphe Carlgren, 1931, including redescriptions of the two presently recognized species, Ceriantheomorphe ambonensis (Kwietniewski, 1898) and Ceriantheomorphe brasiliensis (Mello-Leitão, 1919), comb. nov., and a description of the new species Ceriantheomorphe adelita sp. nov.

HTML

XML

PDF

]]>
Research Article Mon, 9 Sep 2019 14:05:55 +0300
Scolopsis lacrima, a new species of monocle bream (Teleostei, Perciformes, Nemipteridae) from New Caledonia https://zookeys.pensoft.net/article/35052/ ZooKeys 861: 119-128

DOI: 10.3897/zookeys.861.35052

Authors: Jumpei Nakamura, Philippe Béarez, Hiroyuki Motomura

Abstract: The new monocle bream Scolopsis lacrima sp. nov. is described from a single specimen (213.6 mm standard length) collected from Grande-Terre Island, New Caledonia. The new species closely resembles S. meridiana, both species having the upper part of the pectoral-fin base with reddish blotch when fresh, two bands across the top of the snout, a dorsal scaled area on the head reaching anteriorly to between the anterior margin of the eye and anterior nostril, a similar number of lateral-line scales, and absence of a small antrorse spine below the eye. However, S. lacrima sp. nov. is distinguished from S. meridiana by having diagonal lines on the body absent (vs. 18–20 diagonal lines in the latter), a dark longitudinal band below the lateral line (vs. longitudinal lines absent), the caudal fin central area not patterned (vs. with several dark horizontal lines), a narrower body and shallower caudal peduncle.

HTML

XML

PDF

]]>
Research Article Mon, 8 Jul 2019 14:02:41 +0300
A review of gorgonian coral species (Cnidaria, Octocorallia, Alcyonacea) held in the Santa Barbara Museum of Natural History research collection: focus on species from Scleraxonia, Holaxonia, Calcaxonia – Part III: Suborder Holaxonia continued, and suborder Calcaxonia https://zookeys.pensoft.net/article/34317/ ZooKeys 860: 183-306

DOI: 10.3897/zookeys.860.34317

Authors: Elizabeth Anne Horvath

Abstract: Alcyonacean (Gorgonian) coral species from Holaxonia (not previously reviewed in this three-part work), family Plexauridae, as well as species in Calcaxonia were reviewed. Specimens examined were collected from the California Bight and adjacent areas, many now held in the research collection of the Santa Barbara Museum of Natural History (SBMNH). The collection has incorporated numerous specimens collected by the Allan Hancock Foundation (AHF) ‘Velero’ Expeditions of 1931–1941 and 1948–1985. This historic collection displays an emphasis on species belonging to the Holaxonia, particularly gorgoniids and plexaurids. This third part of the larger work presented a thorough, in-depth discussion of at least one genus (Swiftia Duchassaing & Michelotti, 1864) in the Plexauridae found within the California Bight that has generated some taxonomic confusion; in that discussion are comments on other genera (such as Psammogorgia Verrill, 1868a, to which several species had been previously ascribed). The discussion of Swiftia includes description of a morphological trend (encompassing colony form, color and sclerite form), likely influenced by geography and ecology, not noted or discussed previously. Additionally, a preliminary discussion of the genus (Thesea Duchassaing & Michelotti, 1860) was presented; this genus, both historically and currently, has not been fully examined in California waters. Finally, a short review was given for the few species of Calcaxonia represented in the SBMNH research collection. This paper, Part III of the full review, continued and concludes the systematic examination of species represented in the SBMNH research collection begun in Part I, continued in Part II, focusing on all species of gorgonian coral held in the SBMNH research collection, known to currently inhabit the California Bight and adjacent areas.

HTML

XML

PDF

]]>
Research Article Thu, 4 Jul 2019 20:22:33 +0300
A review of gorgonian coral species (Cnidaria, Octocorallia, Alcyonacea) held in the Santa Barbara Museum of Natural History research collection: focus on species from Scleraxonia, Holaxonia, Calcaxonia – Part II: Species of Holaxonia, families Gorgoniidae and Plexauridae https://zookeys.pensoft.net/article/33597/ ZooKeys 860: 67-182

DOI: 10.3897/zookeys.860.33597

Authors: Elizabeth Anne Horvath

Abstract: Gorgonian coral specimens from the Holaxonia, families Gorgoniidae and Plexauridae held in the collection of the Santa Barbara Museum of Natural History (SBMNH) were reviewed and evaluated for species identification. The specimens were collected from within, and adjacent areas of, the California Bight. The SBMNH collection has encompassed within it a large percentage of specimens collected by the Allan Hancock Foundation (AHF) ‘Velero’ Expeditions of 1931–1941 and 1948–1985. This historic collection displays an emphasis on species belonging to the Holaxonia, particularly the gorgoniids and plexaurids; thus, this second part presents a thorough discussion of well-known genera from within the California Bight, with more extensive discussions of several genera that have historically, and currently, led to confusion (and thus, misidentification). A brief discussion of a California Bight grouping, referred to within as the “red whips,” is presented; this grouping encompasses several species with very similar colony appearance across a number of genera. Two species, the gorgoniid Leptogorgia chilensis (Verrill, 1868) and the plexaurid Chromoplexaura marki (Kükenthal, 1913) each required the designation of a neotype from within the collection. A new species in the genus Eugorgia Verrill, 1868, a whip or thread-like form belonging to the family Gorgoniidae, is described. One additional plexaurid genus (Placogorgia) is discussed, a genus not commonly reported for the California Bight region. This is the first comprehensive work, in three parts, focusing on all species of gorgonian coral known to inhabit the California Bight. This paper, Part II of the full work, continues the systematic review of all species represented in the Santa Barbara Museum of Natural History research collection begun in Part I.

HTML

XML

PDF

]]>
Research Article Thu, 4 Jul 2019 11:03:02 +0300
A new species of the genus Ochthebius (Coleoptera, Hydraenidae) from the Ogasawara Islands, Japan, with a description of the larva https://zookeys.pensoft.net/article/35677/ ZooKeys 855: 95-107

DOI: 10.3897/zookeys.855.35677

Authors: Hiroyuki Yoshitomi, Haruki Karube, Masakazu Hayashi

Abstract: A new species of the genus Ochthebius, O. (O.) sasakii sp. nov., is described from the Ogasawara Islands, Japan, with a description of the larva. This record is the first of the family Hydraenidae from the Ogasawara Islands. This species belongs to the punctatus species group and is similar to two Japanese species, O. (O.) inermis Sharp, 1884 and O. (O.) danjo Nakane, 1990, but it differs from them in both adult and larval characters. The larva of O. (O.) inermis is also described for comparison.

HTML

XML

PDF

]]>
Research Article Thu, 13 Jun 2019 09:05:09 +0300
Annotated checklist for stony corals of American Sāmoa with reference to mesophotic depth records https://zookeys.pensoft.net/article/34763/ ZooKeys 849: 1-170

DOI: 10.3897/zookeys.849.34763

Authors: Anthony D. Montgomery, Douglas Fenner, Robert J. Toonen

Abstract: An annotated checklist of the stony corals (Scleractinia, Milleporidae, Stylasteridae, and Helioporidae) of American Sāmoa is presented. A total of 377 valid species has been reported from American Sāmoa with 342 species considered either present (251) or possibly present (91). Of these 342 species, 66 have a recorded geographical range extension and 90 have been reported from mesophotic depths (30–150 m). Additionally, four new species records (Acanthastrea subechinata Veron, 2000, Favites paraflexuosus Veron, 2000, Echinophyllia echinoporoides Veron & Pichon, 1980, Turbinaria irregularis Bernard, 1896) are presented. Coral species of concern include species listed under the US Endangered Species Act (ESA) and the International Union for Conservation of Nature’s (IUCN) Red List of threatened species. Approximately 17.5% of the species present or possibly present are categorized as threatened by IUCN compared to 27% of the species globally. American Sāmoa has seven ESA-listed or ESA candidate species, including Acropora globiceps (Dana, 1846), Acropora jacquelineae Wallace, 1994, Acropora retusa (Dana, 1846), Acropora speciosa (Quelch, 1886), Fimbriaphyllia paradivisa (Veron, 1990), Isopora crateriformis (Gardiner, 1898), and Pocillopora meandrina Dana, 1846. There are two additional species possibly present, i.e., Pavona diffluens (Lamarck, 1816) and Porites napopora Veron, 2000.

HTML

XML

PDF

]]>
Checklist Tue, 21 May 2019 11:48:29 +0300
Prognathodes geminus, a new species of butterflyfish (Teleostei, Chaetodontidae) from Palau https://zookeys.pensoft.net/article/32562/ ZooKeys 835: 125-137

DOI: 10.3897/zookeys.835.32562

Authors: Joshua M. Copus, Richard L. Pyle, Brian D. Greene, John E. Randall

Abstract: A new species of the butterflyfish genus Prognathodes (Chaetodontidae) is described from two specimens collected at a depth of 116 m off Ngemelis Island, Palau. Prognathodes geminus sp. n. is similar to P. basabei Pyle & Kosaki, 2016 from the Hawaiian archipelago, and P. guezei (Maugé & Bauchot, 1976) from the western Indian Ocean, but differs from these species in the number of soft dorsal-fin rays, size of head, body width, and body depth. There are also subtle differences in life color, and substantial differences in the mtDNA cytochrome oxidase I sequence (d ≈ 0.08). Although genetic comparisons with P. guezei are unavailable, it is expected that the genetic divergence between P. guezei and P. geminus will be even greater than that between P. geminus and P. basabei. It is named for the strikingly similar color pattern it shares with P. basabei.

HTML

XML

PDF

]]>
Research Article Thu, 4 Apr 2019 17:14:44 +0300
On the clawed lobsters of the genus Nephropsis Wood-Mason, 1872 recently collected from deep-sea cruises off Taiwan and the South China Sea (Crustacea, Decapoda, Nephropidae) https://zookeys.pensoft.net/article/32837/ ZooKeys 833: 41-58

DOI: 10.3897/zookeys.833.32837

Authors: Su-Ching Chang, Tin-Yam Chan

Abstract: Recent deep-sea cruises using Taiwanese research vessels off Taiwan and in the South China Sea yielded seven species of the clawed lobster genus Nephropsis Wood-Mason, 1872. Four species are new records for Taiwan (Nephropsis acanthura Macpherson, 1990, N. holthuisi Macpherson, 1993, N. serrata Macpherson, 1993, and N. suhmi Bate, 1888) and three species are new records of Dongsha (under the jurisdiction of Taiwan) in the South China Sea (N. ensirostris Alcock, 1901, N. stewarti Wood-Mason, 1872, and N. suhmi). Altogether, five and four species of this genus are now known from Taiwan and Dongsha, respectively. The diagnostic characters and coloration are illustrated for most, if not all, of these species.

HTML

XML

PDF

]]>
Research Article Mon, 25 Mar 2019 16:41:01 +0200
Population genetic structure of Marbled Rockfish, Sebastiscus marmoratus (Cuvier, 1829), in the northwestern Pacific Ocean https://zookeys.pensoft.net/article/30586/ ZooKeys 830: 127-144

DOI: 10.3897/zookeys.830.30586

Authors: Lu Liu, Xiumei Zhang, Chunhou Li, Hui Zhang, Takashi Yanagimoto, Na Song, Tianxiang Gao

Abstract: Sebastiscus marmoratus is an ovoviviparous fish widely distributed in the northwestern Pacific. To examine the gene flow and test larval dispersal strategy of S. marmoratus in Chinese and Japanese coastal waters, 421 specimens were collected from 22 localities across its natural distribution. A 458 base-pair fragment of the mitochondrial DNA (mtDNA) control region was sequenced to examine genetic diversity and population structure. One-hundred-six variable sites defined 166 haplotypes. The populations of S. marmoratus showed high haplotype diversity with a range from 0.8587 to 0.9996, indicating a high level of intrapopulation genetic diversity. Low non-significant genetic differentiation was estimated among populations except those of Hyogo, Behai, and Niiigata, which showed significant genetic differences from the other populations. The demographic history examined by neutrality tests, mismatch distribution analysis, and Bayesian skyline analysis suggested a sudden population expansion dating to the late Pleistocene. Recent population expansion in the last glacial period, wide dispersal of larvae by coastal currents, and the homogeneity of the environment may have important influences on the population genetic pattern. Knowledge of genetic diversity and genetic structure will be crucial to establish appropriate fishery management of S. marmoratus.

HTML

XML

PDF

]]>
Research Article Thu, 14 Mar 2019 16:29:02 +0200
A new species of Polyonyx (Crustacea, Anomura, Porcellanidae) inhabiting polychaete-worm tubes (Annelida, Chaetopteridae) in the Indo-West Pacific https://zookeys.pensoft.net/article/30587/ ZooKeys 818: 25-34

DOI: 10.3897/zookeys.818.30587

Authors: Bernd Werding, Alexandra Hiller

Abstract: Polyonyx socialis sp. n. from the South China Sea of Vietnam is described. The new species was collected in a previous study that compared the vertebrate and invertebrate symbiont communities living in the tubes of two syntopic species of the polychaete genus Chaetopterus. Polyonyx socialis sp. n. inhabits the tubes of the smaller polychaete species as a heterosexual pair, and frequently shares the cavity of the host’s tube with a larger porcellanid, P. heok, also present as a male-female pair, and with a species of trinchesiid nudibranch. Less frequently, the new species shares its host with a heterosexual pair of a larger species of pinnotherid crab. Polyonyx socialis sp. n. belongs to the P. sinensis group, a world-wide distributed morphological line within the heterogeneous genus Polyonyx. Most species in this group are obligate commensals of chaetopterid polychaetes. The crabs have a transversally cylindrical habitus, which enables them to move laterally along the worm tubes with ease. Polyonyx socialis sp. n. is a relatively small species that lives attached to the inner walls of the polychaete tube. The small size and flattened chelipeds and walking legs of the new species confers it an advantage to cohabiting the same worm tube with larger decapod species occupying most of the tube’s cavity.

HTML

XML

PDF

]]>
Research Article Thu, 17 Jan 2019 15:32:43 +0200
An annotated checklist of the Cook Islands psyllids with keys to the species and two new records (Hemiptera, Psylloidea) https://zookeys.pensoft.net/article/28829/ ZooKeys 811: 91-108

DOI: 10.3897/zookeys.811.28829

Authors: Francesco Martoni, Samuel D. J. Brown

Abstract: An annotated checklist of the psyllids of the Cook Islands is presented. The presence of Syntomoza tahuata (Klyver, 1932) and Trioza alifumosa Klyver, 1932 in the archipelago, based on new material collected, is reported for the first time. This is the first record from these islands of the genus Syntomoza and the family Liviidae. An identification key to the psyllid species known from the Cook Islands is provided, and their origin and provenance are discussed in relation to their biogeographic implications.

HTML

XML

PDF

]]>
Checklist Mon, 31 Dec 2018 12:00:44 +0200
Genetic signatures of polymorphic microsatellite loci in the Ambiguous silver pomfret, Pampus argenteus (Teleostei, Stromateidae) https://zookeys.pensoft.net/article/25602/ ZooKeys 810: 139-151

DOI: 10.3897/zookeys.810.25602

Authors: Yuan Li, Long-Shan Lin, Tian-Xiang Gao

Abstract: Pampus argenteus is a broadly exploited pelagic fish species, commonly misidentified as Pampus echinogaster. Genetic variation and population structure in Pampus argenteus was studied based on seven microsatellite loci. The observed high average allele number, heterozygosity values, and polymorphism information content of P. argenteus suggested high genetic diversity. No population genetic differentiation was detected based on the results of pairwise Fst, three-dimensional factorial correspondence analysis (3D-FCA) and STRUCTURE analysis, which implied continuous gene flow. Wilcoxon signed rank tests did not indicate significant heterozygosity excess, and recent genetic bottleneck events were not detected. Coupled with previous mitochondrial DNA results, the findings presented here indicate that high gene flow characterizes the current phylogeographic pattern of the species.

HTML

XML

PDF

]]>
Research Article Thu, 20 Dec 2018 15:25:25 +0200
The incredible diversity of Labiobaetis Novikova & Kluge in New Guinea revealed by integrative taxonomy (Ephemeroptera, Baetidae) https://zookeys.pensoft.net/article/28988/ ZooKeys 804: 1-136

DOI: 10.3897/zookeys.804.28988

Authors: Thomas Kaltenbach, Jean-Luc Gattolliat

Abstract: Material collected between 1999 and 2011 in Papua New Guinea and the Papua Province of Indonesia unveiled the enormous diversity of Labiobaetis on this island. Twenty-six new species were identified and delimited by integrative taxonomy using genetic distance (COI, Kimura-2-parameter) and morphology. These new species are described and illustrated based on larvae, augmenting the total number of Labiobaetis species on the island of New Guinea to 32. Seven morpho-groups of species are proposed based on morphological characters and a key to all New Guinea species is provided. The generic attributes of the larvae are summarised and slightly modified based on the examinations of the new species. Results on the genetics of most species (COI) are also provided. The interspecific K2P distances are between 13% and 32%, the intraspecific distances usually between 0% and 2%. Possible reasons for the remarkable richness of this genus in New Guinea are discussed.

HTML

XML

PDF

]]>
Research Article Mon, 10 Dec 2018 19:02:30 +0200
Introduction of the Exocelina casuarina-group, with a key to its representatives and descriptions of 19 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae) https://zookeys.pensoft.net/article/28903/ ZooKeys 803: 7-70

DOI: 10.3897/zookeys.803.28903

Authors: Helena Shaverdo, Katayo Sagata, Michael Balke

Abstract: Nineteen new species of Exocelina Broun, 1886 from New Guinea are described herein: E. adelbertensis sp. n., E. ambua sp. n., E. bewani sp. n., E. cyclops sp. n., E. ibalimi sp. n., E. keki sp. n., E. kumulensis sp. n., E. mendiensis sp. n., E. menyamya sp. n., E. okapa sp. n., E. piusi sp. n., E. pseudofume sp. n., E. pseudopusilla sp. n., E. pusilla sp. n., E. sima sp. n., E. simbaiensis sp. n., E. simbaijimi sp. n., E. sumokedi sp. n., and E. yoginofi sp. n. All of them, together with five already described species, have been united into the newly defined casuarina-group, a polyphyletic complex of related species with similar shape of the median lobe and paramere setation. An identification key to all known species of the group is provided, and important diagnostic characters (habitus, color, male protarsomeres 4–5, median lobes, and parameres) are illustrated. Data on the distribution of the species are given, showing that most of the species occur in the central, mountain part of Papua New Guinea.

HTML

XML

PDF

]]>
Research Article Thu, 6 Dec 2018 19:50:28 +0200
Description of a new deep-water dogfish shark from Hawaii, with comments on the Squalus mitsukurii species complex in the West Pacific https://zookeys.pensoft.net/article/28375/ ZooKeys 798: 135-157

DOI: 10.3897/zookeys.798.28375

Authors: Toby S. Daly-Engel, Amber Koch, James M. Anderson, Charles F. Cotton, R. Dean Grubbs

Abstract: Dogfish sharks of the genus Squalus are small, deep-water sharks with a slow rate of molecular evolution that has led to their designation as a series of species complexes, with low between-species diversity relative to other taxa. The largest of these complexes is named for the Shortspine spurdog (Squalus mitsukurii Jordan & Snyder), a medium-sized dogfish shark common to warm upper slope and seamount habitats, with a putative circumglobal distribution that has come under investigation recently due to geographic variation in morphology and genetic diversity. The Hawaiian population of Squalus mitsukurii was examined using both morphological and molecular analyses, putting this group in an evolutionary context with animals from the type population in Japan and closely-related congeners. External morphology differs significantly between the Hawaiian and Japanese S. mitsukurii, especially in dorsal fin size and relative interdorsal length, and molecular analysis of 1,311 base pairs of the mitochondrial genes ND2 and COI show significant, species-level divergence on par with other taxonomic studies of this genus. The dogfish shark in Hawaii represents a new species in the genus, and the name Squalus hawaiiensis, the Hawaiian spurdog, is designated after the type location.

HTML

XML

PDF

]]>
Research Article Wed, 21 Nov 2018 00:17:57 +0200
A new species and new records of Engytatus from the Hawaiian Islands (Heteroptera, Miridae) https://zookeys.pensoft.net/article/21054/ ZooKeys 796: 97-106

DOI: 10.3897/zookeys.796.21054

Authors: Dan A. Polhemus

Abstract: Engytatus henryi sp. n. is described from the Waianae Mountains of Oahu. This new species feeds on Abutilon sandwicense (Malvaceae), an endangered understory plant in mesic forests. A dorsal habitus photograph and line drawings of key male genitalic structures are provided for E. henryi, accompanied by a photograph of the host plant. Cyrtopeltis kahakai Asquith is given a new generic assignment as Engytatus kahakai (Asquith) new combination, and additional locality and host-plant records are provided for four other Hawaiian endemic Engytatus species.

HTML

XML

PDF

]]>
Research Article Thu, 15 Nov 2018 07:08:08 +0200
New genus and two new species of Hyaliodini from the Philippines (Miridae, Deraeocorinae) https://zookeys.pensoft.net/article/21353/ ZooKeys 796: 131-146

DOI: 10.3897/zookeys.796.21353

Authors: Katrina L. Menard, Cameron D. Siler

Abstract: Philicoris, a new genus of the mirid subfamily Deraeocorinae, tribe Hyaliodini, is described from the Philippines. New species Philicoris mayon sp. n. and Philicoris palali sp. n. from the island of Luzon are documented with photographic images of the dorsal habitus and male genital structures.

HTML

XML

PDF

]]>
Research Article Thu, 15 Nov 2018 00:30:28 +0200
A new species of frog-biting midge from Papua New Guinea with a key to the described Corethrellidae of the Australopapuan region (Diptera, Corethrellidae, Corethrella) https://zookeys.pensoft.net/article/28543/ ZooKeys 795: 39-48

DOI: 10.3897/zookeys.795.28543

Authors: Gunnar Mikalsen Kvifte, Ximena E. Bernal

Abstract: Corethrella oppositophila Kvifte & Bernal, sp. n. is described based on one male and six female specimens collected at 2200 m a.s.l. on Mount Wilhelm, Papua New Guinea. The species is the fourth species of frog-biting midge described from this country and appears similar to Corethrella solomonis Belkin based on pigmentation of legs and abdominal tergites. It differs from C. solomonis, however, in the shape of female flagellomeres I–III, and in the thorax which has a dark brown vertical stripe. The new species is named for its sexually dimorphic flagellomeres, which are short and squat in the female and elongate in the male. These differences in morphological characters are discussed in light of the likely sexual differences in functional uses of the antennae, as males use them for mating only whereas females use them both for mating and prey location. An emended key is presented to the described Australopapuan species of Corethrellidae.

HTML

XML

PDF

]]>
Research Article Mon, 5 Nov 2018 19:47:48 +0200
Unravelling the moons: review of the genera Paratetilla and Cinachyrella in the Indo-Pacific (Demospongiae, Tetractinellida, Tetillidae) https://zookeys.pensoft.net/article/27546/ ZooKeys 791: 1-46

DOI: 10.3897/zookeys.791.27546

Authors: Nadiezhda Santodomingo, Leontine E. Becking

Abstract: Paratetilla bacca (Selenka, 1867) and Cinachyrella australiensis (Carter, 1886) occur in a broad range of marine environments and are allegedly widely distributed species in the Indo-Pacific. We coin the term ‘moon sponges’ for these species as they are spherical in shape with numerous porocalices resembling the lunar surface. Both species have a complex taxonomic history with high synonymization, in particular by Burton (1934, 1959). An examination of the junior synonyms proposed by Burton (1934, 1959) was conducted to establish the validity of the names. More than 230 specimens from Naturalis Biodiversity Center were reviewed that belong to the genera Paratetilla and Cinachyrella from marine lakes, coral reefs, and mangroves in Indonesia. The aim of the current study was to untangle the taxonomic history, describe the collection of moon sponges from Indonesia, and develop a key. We extensively reviewed the taxonomic literature as well as holotypes of most of the species synonymized by Burton. The taxonomic history of Paratetilla spp. and Cinachyrella australiensis showed some cases of misinterpreted synonyms, misidentifications, and lack of detailed descriptions for some species. The conclusion of the revision is that there are three valid species of Paratetilla (P. arcifera, P. bacca, and P. corrugata) and four valid species of Cinachyrella (C. australiensis, C. porosa, C. paterifera, and C. schulzei) in Indonesia. This is furthermore corroborated by molecular work from previous studies. Paratetilla arcifera Wilson 1925 and C. porosa (Lendenfeld, 1888) are resurrected. A full review of taxonomic history is provided as well as a key for identification of moon sponges from Indonesia. All species are sympatric and we expect that there are undescribed species remaining within the Tetillidae from the Indo-Pacific. Our current review provides the framework from which to describe new species in the genera Paratetilla and Cinachyrella from the Indo-Pacific.

HTML

XML

PDF

]]>
Research Article Mon, 22 Oct 2018 17:00:03 +0300
New records of Tylokepon with the description of a new species (Epicaridea, Bopyridae, Keponinae) https://zookeys.pensoft.net/article/28134/ ZooKeys 790: 77-85

DOI: 10.3897/zookeys.790.28134

Authors: Jianmei An, Miao Zhang, Gustav Paulay

Abstract: The parasitic isopod genus Tylokepon is recorded for the first time from the Mariana Islands and Australia. Tylokepon marianensis sp. n. is described from the Mariana Islands, infesting Thusaenys irami (Laurie, 1906). The holotype female differs from other known Tylokepon females by the tri-lobed projection on pereomere 6, almost smooth lateral plates and pleopods, shape of oostegite 1, and widely opened brood pouch. The host is first recorded for bearing bopyrids. The new record of T. bonnieri Stebbing, 1904 from Australia on the type host extends the range of this species from China and India. A table of localities and hosts and a key to all species of Tylokepon are provided.

HTML

XML

PDF

]]>
Research Article Mon, 15 Oct 2018 18:02:07 +0300
Stolonifera from shallow waters in the north-western Pacific: a description of a new genus and two new species within the Arulidae (Anthozoa, Octocorallia) https://zookeys.pensoft.net/article/28875/ ZooKeys 790: 1-19

DOI: 10.3897/zookeys.790.28875

Authors: Yee Wah Lau, Frank Robert Stokvis, Leendert Pieter van Ofwegen, James Davis Reimer

Abstract: A new genus and two new species of stoloniferous octocorals (Alcyonacea) within the family Arulidae are described based on specimens collected from Okinawa (Japan), Palau and Dongsha Atoll (Taiwan). Hana gen. n. is erected within Arulidae. Hana hanagasa sp. n. is characterised by large spindle-like table-radiates and Hana hanataba sp. n. is characterised by having ornamented rods. The distinction of these new taxa is also supported by molecular phylogenetic analyses. The support values resulting from maximum likelihood and Bayesian inference analyses for the genus Hana and new species H. hanagasa and H. hanataba are 82/1.0, 97/1.0 and 61/0.98, respectively. Hana hanagasa sp. n. and Hana hanataba sp. n. are the first arulid records for Okinawa, Palau, and Dongsha Atoll, and represent species of the second genus within the family Arulidae.

HTML

XML

PDF

]]>
Research Article Mon, 15 Oct 2018 17:55:22 +0300
Tosanoides annepatrice, a new basslet from deep coral reefs in Micronesia (Perciformes, Percoidei, Serranidae) https://zookeys.pensoft.net/article/28421/ ZooKeys 786: 139-153

DOI: 10.3897/zookeys.786.28421

Authors: Richard L. Pyle, Brian D. Greene, Joshua M. Copus, John E. Randall

Abstract: The new species Tosanoides annepatrice sp. n. is described from four specimens collected at depths of 115–148 m near Palau and Pohnpei in Micronesia. It differs from the other three species of this genus in life color and in certain morphological characters, such as body depth, snout length, anterior three dorsal-fin spine lengths, caudal-fin length, and other characters. There are also genetic differences from the other four species of Tosanoides (d ≈ 0.04–0.12 in mtDNA cytochrome oxidase I). This species is presently known only from Palau and Pohnpei within Micronesia, but it likely occurs elsewhere throughout the tropical western Pacific.

HTML

XML

PDF

]]>
Research Article Tue, 2 Oct 2018 11:02:52 +0300
Doubling the known endemic species diversity of New Caledonian armored scale insects (Hemiptera, Diaspididae) https://zookeys.pensoft.net/article/27938/ ZooKeys 782: 11-47

DOI: 10.3897/zookeys.782.27938

Authors: Nate B. Hardy, Douglas J. Williams

Abstract: Fourteen species of armored scale insects are known only from New Caledonia. Here, the adult female of fourteen more are described: Agrophaspis ansevatae sp. n., Aonidia montikoghis sp. n., Aonidia pauca sp. n., Fernaldanna whita sp. n., Furcaspis costulariae sp. n., Greeniella casuarinae sp. n., Greeniella dacrydiae sp. n., Lepidosaphes monticola sp. n., Leptaspis pege gen. et sp. n., Leucaspis montikoghis sp. n., Melanaspis nothofagi sp. n., Neomorgania nothofagi sp. n., Pseudaonidia dugdali sp. n., and Pseudaonidia yateensis sp. n. We note that the diversity of New Caledonian armored scale insects appears to have resulted more from trans-oceanic dispersal than in situ speciation.

HTML

XML

PDF

]]>
Research Article Thu, 16 Aug 2018 00:59:24 +0300
Hawaiian Philodoria (Lepidoptera, Gracillariidae, Ornixolinae) leaf mining moths on Myrsine (Primulaceae): two new species and biological data https://zookeys.pensoft.net/article/21690/ ZooKeys 773: 109-141

DOI: 10.3897/zookeys.773.21690

Authors: Shigeki Kobayashi, Chris A. Johns, Carlos Lopez-Vaamonde, Camiel Doorenweerd, Atsushi Kawakita, Issei Ohshima, David C. Lees, Sofia Hanabergh, Akito Y. Kawahara

Abstract: This paper provides new taxonomic and biological data on a complex of gracillariid moths in the endemic genus Philodoria Walsingham, 1907 that are associated with Myrsine (Primulaceae) in the Hawaiian Islands, United States. Two new species, Philodoria kauaulaensis Kobayashi, Johns & Kawahara, sp. n. (host: Myrsine lanaiensis, M. lessertiana, and M. sandwicensis) and P. kolea Kobayashi, Johns & Kawahara, sp. n. (host: M. lessertiana) are described. Biological data are provided for two previously described species that also feed on Myrsine: P. auromagnifica Walsingham, 1907 and P. succedanea Walsingham, 1907. For the first time we detail and illustrate genital structures, immature stages, biology, and host plants of P. auromagnifica and P. succedanea. Philodoria kolea, P. auromagnifica, and P. succedanea occur in sympatry on the island of Hawaii (Big Island), but each species differs in behavioral characters: P. kolea utilizes leaves of seedlings and forms a serpentine mine, whereas the latter two utilize leaves of larger plants, and form linear or serpentine to blotch mines. More broadly, leaf mine forms and diagnostic characteristics of the Myrsine-feeding species complex of Philodoria (as currently known) are reviewed and illustrated.

HTML

XML

PDF

]]>
Research Article Mon, 9 Jul 2018 21:22:29 +0300
New species of Eurycletodes Sars, 1909 and Odiliacletodes Soyer, 1964 from the deep Gulf of California (Copepoda, Harpacticoida, Argestidae) https://zookeys.pensoft.net/article/24511/ ZooKeys 764: 1-25

DOI: 10.3897/zookeys.764.24511

Authors: Samuel Gómez

Abstract: To date, three species of the family Ancorabolidae, three species of the family Argestidae, and one species of the family Rhizothrichidae are known from the deep sea of the Gulf of California. The descriptions of two new species, Eurycletodes paraephippiger sp. n. and Odiliacletodes secundus sp. n. collected from the Southern Trough of Guaymas Basin at 1440 m and 1642 m depths, respectively, are presented herein. The closest relatives of these two species, E. ephippiger Por, 1964 and O. gracilis Soyer, 1964 are known from the Mediterranean, but some relatives have been reported also from the southern Atlantic. Eurycletodes paraephippiger sp. n. is undoubtedly related to E. ephippiger Por, 1964 known from Israel and Banyuls-sur-Mer (France). These two species can be separated by the armature complement of the basis of the maxillule, by the armature complement of the syncoxa of the maxilliped, and by the relative position of the anal operculum. Odiliacletodes secundus sp. n. showed to be closely related to O. gracilis Soyer, 1964 known from Banyuls-sur-Mer only. The latter two species can be separated by the armature complement of the syncoxa of the maxilliped, by the structure of the antenna, and by the inner armature complement of the third exopodal segment of the fourth swimming leg.

HTML

XML

PDF

]]>
Research Article Tue, 5 Jun 2018 16:13:09 +0300
Integrative taxonomy of a new and highly-diverse genus of onchidiid slugs from the Coral Triangle (Gastropoda, Pulmonata, Onchidiidae) https://zookeys.pensoft.net/article/21252/ ZooKeys 763: 1-111

DOI: 10.3897/zookeys.763.21252

Authors: Tricia C. Goulding, Munawar Khalil, Shau Hwai Tan, Benoît Dayrat

Abstract: A new genus of onchidiid slugs, Wallaconchis Goulding & Dayrat, gen. n., is described, including ten species. Five species were previously described but known only from the type material: Wallaconchis ater (Lesson, 1830), W. graniferum (Semper, 1880), W. nangkauriense (Plate, 1893), W. buetschlii (Stantschinsky, 1907), and W. gracile (Stantschinsky, 1907), all of which were originally classified in Onchidium Buchannan, 1800. Many new records are provided for these five species, which greatly expand their known geographic distributions. Five species are new: Wallaconchis achleitneri Goulding, sp. n., W. comendadori Goulding & Dayrat, sp. n., W. melanesiensis Goulding & Dayrat, sp. n., W. sinanui Goulding & Dayrat, sp. n., and W. uncinus Goulding & Dayrat, sp. n. Nine of the ten Wallaconchis species are found in the Coral Triangle (eastern Indonesia and the Philippines). Sympatry is high, with up to six species found on the island of Bohol (Philippines) and eight species overlapping in northern Sulawesi (Indonesia). Wallaconchis is distinguished from other onchidiids by its bright dorsal colors (red, yellow, orange) but those are extremely variable and not useful for specific identification. Internally, the reproductive system can be used to identify all Wallaconchis species. The copulatory organs of Wallaconchis species are especially diverse compared to other onchidiid genera, and the possible role of reproductive incompatibility in species diversification is discussed. All specimens examined were freshly collected for the purpose of a worldwide revision of the Onchidiidae Rafinesque, 1815. The species are well delineated using DNA sequences and comparative anatomy. Mitochondrial DNA analysis yields thirteen molecular units separated by a large barcode gap, while nuclear DNA yields nine units. By integrating nuclear DNA and mitochondrial DNA with morphology, ten species are recognized. The natural history of each species (e.g., the microhabitat where they are found) is also documented. Nomenclature is addressed thoroughly (the types of all onchidiid species were examined, lectotypes were designated when needed, nomina dubia are discussed). Morphological characters, transitions to new microhabitats, and diversification processes are discussed in the context of a robust molecular phylogeny.

HTML

XML

PDF

]]>
Monograph Mon, 4 Jun 2018 08:24:19 +0300
Plectranthias ahiahiata, a new species of perchlet from a mesophotic ecosystem at Rapa Nui (Easter Island) (Teleostei, Serranidae, Anthiadinae) https://zookeys.pensoft.net/article/24618/ ZooKeys 762: 105-116

DOI: 10.3897/zookeys.762.24618

Authors: Bart Shepherd, Tyler Phelps, Hudson T. Pinheiro, Alejandro Pérez-Matus, Luiz A. Rocha

Abstract: A new species of the perchlet genus Plectranthias is herein described from a single specimen found at Rapa Nui (Easter Island) in the South Pacific. Plectranthias ahiahiata sp. n. was collected at a depth of 83 m in a mesophotic coral ecosystem at Rapa Nui. The main difference between Plectranthias ahiahiata and other members of the genus is higher fin-ray counts (X, 18 dorsal; 18 pectoral) and its distinctive coloration. Compared to the three other known eastern South Pacific species, P. ahiahiata has more dorsal-fin rays, more pectoral-fin rays, fewer tubed lateral-line scales, fewer gill rakers, a longer head relative to SL, a very short first dorsal spine relative to SL, and a short third anal spine relative to SL. Plectranthias ahiahiata is distinguished from western Pacific species, by having more dorsal- and pectoral-fin rays. The closest relative based on genetic divergence (with 12.3% uncorrected divergence in the mitochondrial COI gene) is Plectranthias winniensis, a widely distributed species, suggesting important links between Rapa Nui and western Pacific islands. This new species adds to the high endemism of the Rapa Nui ichthyofauna, and is further evidence of the importance of mesophotic reefs as unique communities.

HTML

XML

PDF

]]>
Research Article Thu, 31 May 2018 13:33:09 +0300
Revision of the Hawaiian psyllid genus Swezeyana, with descriptions of seven new species (Hemiptera, Psylloidea, Triozidae) https://zookeys.pensoft.net/article/23019/ ZooKeys 758: 75-113

DOI: 10.3897/zookeys.758.23019

Authors: Diana M. Percy

Abstract: The endemic Hawaiian genus Swezeyana Caldwell, 1940 is highly distinctive due to the extremely long genal processes. In addition, some of the immatures are ornamented with extraordinary tubercles and tentacles. Two Swezeyana species are redescribed, and seven new species are described, bringing the total number of species in the genus to nine. All species are hosted by a single, endemic host plant, Planchonella sandwicensis (Sapotaceae), which is distributed across all major islands in the archipelago. The majority of Swezeyana species are single island endemics. A sister taxon pair is found sympatrically on the same individual plants on Kauai, and putative sister or at least closely related species are also found sympatrically on Oahu and Hawaii, suggesting these taxa may have diversified in sympatry. However, there is no observed ecological niche partitioning, despite some striking morphological diversity, as all Swezeyana species have free-living immatures that are found on the leaf surface, and therefore no apparent biological shifts are coincident with occupying the same host plant. Two species groups are represented by strikingly different female terminalia structure and endoskeletal development, although ovipositor structure is very similar between the two groups. Mitochondrial DNA barcodes (COI and cytB) are provided for eight of the nine species. A phylogenetic analysis of the mitochondrial barcode regions indicates species relationships within Swezeyana and provides a comparison of genetic divergence with other Hawaiian endemic genera.

HTML

XML

PDF

]]>
Monograph Tue, 15 May 2018 12:04:07 +0300