Research Article |
Corresponding author: Sergey Ermilov ( ermilovacari@yandex.ru ) Academic editor: Vladimir Pesic
© 2015 Sergey Ermilov, Dorotee Sandmann, Bernhard Klarner, Rahaju Widyastuti, Stefan Scheu.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Ermilov SG, Sandmann D, Klarner B, Widyastuti R, Scheu S (2015) Contributions to the knowledge of oribatid mites of Indonesia. 1. The genus Allogalumna (Galumnidae) with descriptions of two new species (Acari, Oribatida). ZooKeys 529: 71-86. https://doi.org/10.3897/zookeys.529.6326
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Two new species of oribatid mites of the genus Allogalumna (Oribatida, Galumnidae) are described from litter and soil materials of Sumatra, Indonesia. Allogalumna indonesiensis sp. n. is morphologically most similar to A. borhidii Balogh & Mahunka, 1979, A. quadrimaculata (Mahunka, 1988), A. rotundiceps Aoki, 1996 and A. plowmanae Balogh & Balogh, 1983; however, the new species differs by having densely ciliate bothridial heads, larger body size and absence of a median pore. Allogalumna paranovazealandica sp. n. is morphologically most similar to A. novazealandica Hammer, 1968; however, the new species differs by the shorter body length and barbed and curving postero-laterad bothridial setae. The genus Allogalumna is recorded for the first time in the Indonesian fauna.
Oribatid mites, Allogalumna , new species, new record, Indonesia
At present, the oribatid mite fauna (Acari, Oribatida) of Indonesia is poorly known (
This paper includes the data on taxa of Allogalumna Grandjean, 1936 (Galumnidae). During taxonomic identification, two new species of this genus were found. The main goal of the paper is to describe and illustrate these species under the names A. indonesiensis sp. n. and A. paranovazealandica sp. n.
Allogalumna is a genus that was proposed by
Exact collection locality and habitat are given in the respective “Material examined” section for each new species.
Specimens were mounted in lactic acid on temporary cavity slides for measurement and illustration. The body length was measured in lateral view, from the tip of the rostrum to the posterior edge of the ventral plate. Notogastral width refers to the maximum width in dorsal aspect. Lengths of body setae were measured in lateral aspect. All body measurements are presented in micrometers. Formulae for leg setation are given in parentheses according to the sequence trochanter–femur–genu–tibia–tarsus (famulus included). Formulae for leg solenidia are given in square brackets according to the sequence genu–tibia–tarsus.
General terminology used in this paper follows that of Grandjean (summarized by
Drawings were made with a camera lucida using a Carl Zeiss transmission light microscope “Axioskop-2 Plus”.
Body size: 282–298 × 215–232. Rostral, lamellar and interlamellar setae minute. Bothridial setae with unilaterally dilated, densely ciliate head. Anterior notogastral margin not developed. Four pairs of porose areas rounded. Median pore absent. Postanal porose area elongate oval.
Measurements. Body length: 282 (holotype: male), 282–298 (five paratypes: two females and three males); notogaster width: 215 (holotype), 215–232 (five paratypes). Without sexual dimorphism.
Integument. Body color brown. Body surface, pteromorphs, subcapitular mentum, genital and anal plates, and legs smooth.
Prodorsum (Figs
Notogaster (Figs
Gnathosoma (Fig.
Epimeral and lateral podosomal regions (Fig.
Anogenital region (Figs
Legs (Fig.
Leg setation and solenidia of adult Allogalumna indonesiensis sp. n. (same data for A. paranovazealandica sp. n.)
Leg | Tr | Fe | Ge | Ti | Ta |
---|---|---|---|---|---|
I | v’ | d, (l), bv’’ | (l), v’, ε | (l), (v), φ1, φ2 | (ft), (tc), (it), (p), (u), (a), s, (pv), v’, (pl), l’’, ε, ω1, ω2 |
II | v’ | d, (l), bv’’ | (l), v’, σ | (l), (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2 |
III | v’ | d, ev’ | l’, σ | l’, (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv) |
IV | v’ | d, ev’ | d, l’ | l’, (v), φ | ft’’, (tc), (p), (u), (a), s, (pv) |
Holotype (male): Indonesia, Sumatra, Harapan landscape, Jungle rubber agroforest, research site HJ2 (project site number), 01°49'31.9"S, 103°17'39.2"E, 84 m a.s.l., from forest floor litter material. Two paratypes (female and male): Indonesia, Sumatra, Bukit Duabelas landscape, secondary rainforest, research site BF1, 01°59'42.5"S, 102°45'08.1"E, 83 m a.s.l., from forest floor litter material. Three paratypes (female and two males): Indonesia, Sumatra, Bukit Duabelas landscape, Jungle rubber agroforest, research site BJ5, 02°08'35.6"S, E 102°51'04.7"E, 51 m a.s.l., from upper soil layer (0–5 cm). All specimens were collected by Bernhard Klarner (15.XI.2013) and determined and collected to morphospecies level by Dorothee Sandmann.
The holotype is deposited in LIPI (Indonesian Institute of Science) Cibinong, Indonesia; three paratypes are deposited in the collection of the Senckenberg Museum, Görlitz, Germany; two paratypes are deposited in the collection of the Tyumen State UniversityMuseum of Zoology, Tyumen, Russia.
The specific name indonesiensis refers to the country of origin, Indonesia.
Allogalumna indonesiensis sp. n. is most similar to A. borhidii Balogh & Mahunka, 1979 from the Neotropical region (see
Body size: 282–298 × 199–215. Rostral, lamellar and interlamellar setae minute. Bothridial setae with unilaterally slightly dilated, elongated, barbed in medio-distal part head. Anterior notogastral margin not developed. Four pairs of porose areas rounded. Median pore present. Postanal porose area elongate oval.
Measurements. Body length: 282 (holotype: female), 282–298 (seven paratypes: two females and five males); notogaster width: 215 (holotype), 199–215 (seven paratypes). Without sexual dimorphism.
Integument. Body color brown. Body surface, pteromorphs, subcapitular mentum, genital and anal plates, and legs smooth.
Prodorsum (Figs
Notogaster (Figs
Gnathosoma (Fig.
Epimeral and lateral podosomal regions (Fig.
Anogenital region (Figs
Legs (Fig.
Holotype (female): Indonesia, Sumatra, Bukit Duabelas landscape, Jungle rubber agroforest, research site BJ5, 02°08'35.6"S, E 102°51'04.7"E, 51 m a.s.l., from upper soil layer (0–5 cm). Four paratypes (female and three males): Indonesia, Sumatra, Harapan landscape, Rubber plantation, research site HR2, 01°52'44.5"S, 103°16'28.4"E, 59 m a.s.l., from upper soil layer (0–5 cm). Three paratypes (female and two males): Indonesia, Sumatra, Harapan landscape, secondary rainforest, research site HF4, S 02°11'15.2"S, 103°20'33.4"E, from upper soil layer (0–5 cm). All specimens were collected by Bernhard Klarner (15.XI.2013) and determined and collected to morphospecies level by Dorothee Sandmann.
The holotype is deposited in LIPI (Indonesian Institute of Science) Cibinong, Indonesia; three paratypes are deposited in the collection of the Senckenberg Museum, Görlitz, Germany; four paratypes are deposited in the collection of the Tyumen State UniversityMuseum of Zoology, Tyumen, Russia.
The specific name paranovazealandica refers to the morphological similarity of the new species to Allogalumna novazealandica Hammer, 1968.
Allogalumna paranovazealandica sp. n. is most similar to A. novazealandica Hammer, 1968 from New Zealand in having minute prodorsal setae, long bothridial setae with slightly dilated head, four pairs of rounded notogastral porose areas, median pore and elongated postanal porose area. However, the new species differs from the latter by the shorter body length (282–298 versus 400–410 in A. novazealandica) and barbed in medio-distal part and curving postero-laterad bothridial setae (versus smooth and straight, directed upwards-laterally in A. novazealandica).
We cordially thank Prof. Dr. Badamdorj Bayartogtokh (National University of Mongolia, Ulaanbaatar, Mongolia) and an anonymous reviewer for valuable comments, Dr. László Dányi, Dr. Csaba Csuzdi and Edit Horváth (Hungarian National History Museum, Hungary) for loaning the paratypes of Allogalumna quadrimaculata (Mahunka, 1988), Kristina Richter (Georg August University Göttingen, Göttingen, Germany) for help in building up the Indonesian oribatid mite morphospecies collection, the State Ministry of Research and Technology of Indonesia (RISTEK) for the research permit and the Indonesian Institute of Sciences (LIPI) and Ministry of Forestry (PHKA) for the collection permit, the village heads, local site owners, PT REKI and Bukit Duabelas National Park for granting access to their properties and the many colleagues and helpers for support in the field.
Financial support was provided by the German Research Foundation (DFG) in the framework of the collaborative German – Indonesian research project CRC990 (EFForTS). The taxonomic study on Galumnoidea was supported by the Russian Foundation for Basic Research (project: 15-04-02706 A).