Research Article |
Corresponding author: Shuqiang Li ( lisq@ioz.ac.cn ) Academic editor: Yuri Marusik
© 2019 Xiaoqing Zhang, Shuqiang Li.
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:
Zhang X, Li S (2019) On three species of the spider genus Pimoa (Araneae, Pimoidae) from China. ZooKeys 855: 1-13. https://doi.org/10.3897/zookeys.855.33501
|
Two new species of the spider genus Pimoa Chamberlin & Ivie, 1943 are described from Hunan and Yunnan Provinces, China: P. binchuanensis sp. nov. (♂♀) and P. xinjianensis sp. nov. (♂♀). In addition, the male of P. lata Xu & Li, 2009 is described for the first time. The DNA barcodes of the two new species are documented.
Asia, description, diagnosis, taxonomy
Pimoidae Wunderlich, 1986 is a relatively small family, with 44 described species belonging to four genera (
Specimens were examined with a LEICA M205C stereomicroscope. Images were captured with an Olympus C7070 wide zoom digital camera (7.1 megapixels) mounted on an Olympus SZX12 dissecting microscope. Epigynes and male palps were examined after dissection from the spiders’ bodies. The left palps were illustrated unless otherwise noted. Epigynes were removed and treated in a warmed 10% potassium hydroxide (KOH) solution.
All measurements were obtained using a LEICA M205C stereomicroscope and are given in millimeters. Eye sizes are measured as the maximum diameter from either dorsal or frontal views. Leg measurements are shown as: Total length (femur, patella + tibia, metatarsus, tarsus). The terminology used in the text and the figure legends follows
Abbreviations used in this paper and in the figure legends: ALE = anterior lateral eye; AME = anterior median eye; AME-ALE = distance between AME and ALE; AME-AME = distance between AME and AME; ALE-PLE = distance between ALE and PLE; AS = alveolar sclerite; C = conductor; CO = copulatory opening; CP = cymbial process; CS = cymbial sclerite; DP = dorsal plate of the epigyne; E = embolus; EP = embolic process; ET = embolic tooth; FD = fertilization duct; MA = median apophysis; P = paracymbium; PLE = posterior lateral eye; PME = posterior median eye; PME-PLE = distance between PME and PLE; PME-PME = distance between PME and PME; S = spermatheca; T = tegulum; VP = ventral plate of epigyne.
DNA barcodes were obtained for the two new species by amplifying and sequencing a partial fragment of the mitochondrial gene cytochrome oxidase subunit I (COI) using primers LCO1490-oono (5’-CWACAAAYCATARRGATATTGG-3’) (
All specimens (including molecular vouchers) are deposited in the Institute of Zoology, Chinese Academy of Sciences (
Pimoa:
Labulla hespera Gertsch & Ivie, 1936, from California, USA.
Males of Pimoa can be distinguished from Weintrauboa Hormiga, 2003 by the elongate cymbial process (CP) with many cuspules (vs cymbial process (CP) and cuspules absent) (Fig.
Left palp of Pimoa binchuanensis sp. nov., holotype A prolateral view B ventral view C retrolateral view. Abbreviations: AS = alveolar sclerite; C = conductor; CP = cymbial process; CS = cymbial sclerite; E = embolus; EP = embolic process; MA = median apophysis; P = paracymbium; T = tegulum. Scale bar: equal for A, B and C.
Epigyne and habitus of Pimoa binchuanensis sp. nov., female paratype and male holotype A epigyne, ventral view B vulva, dorsal view C male habitus, dorsal view D female habitus, dorsal view E female habitus, ventral view. Abbreviations: CO = copulatory opening; DP = dorsal plate of the epigyne; FD = fertilization duct; S = spermatheca; VP = ventral plate of epigyne. Scale bars: equal for D and E.
Thirty-three valid species of Pimoa are currently known from the western Nearctic (14), western Mediterranean (4) and South Asia (15) (
Holotype ♂ (
The specific name refers to the type locality; adjective.
The male of P. binchuanensis sp. nov. can be easily distinguished from other congeners, except for P. anatolica Hormiga, 1994 and P. lihengae Griswold, Long & Hormiga, 1999, by having a long and complex cymbial sclerite (CS) and an elongate cymbial process (CP). From P. anatolica and P. lihengae, it can be distinguished by the long embolic process (EP), about 2 times longer than the embolus (vs embolic process shorter than embolus) (cf. Fig.
Male (holotype,
Female: (paratype,
Type locality only, Yunnan, China (Fig.
Pimoa lata Xu & Li, 2009: 56, figs 1–8 (♀).
Holotype ♀: China: Sichuan: Lushan County: Weita Village, Shuiluodong Cave, (30.28°N, 102.97°E, 1338 m), 15.X.2005, S. Li.
2♀1♂ (
The male of P. lata can be easily distinguished from other congeners, except for P. reniformis Xu & Li, 2007 and P. trifurcata Xu & Li, 2007 by having a short paracymbium and a large and blunt cymbial process (CP), with many cuspules. From P. reniformis, it can be distinguished by the short cymbial sclerite (CS), about 1/3 of the cymbial length, with a blunt tip (vs a long cymbial sclerite (CS) in P. reniformis, about 1/2 of cymbial length, with a sharp tip). From P. trifurcata, it can be distinguished by the bifurcated embolic process (EP) (vs the embolic process (EP) in P. trifurcata with a trifurcate tip) (cf. Fig.
Left palp of Pimoa lata A prolateral view B ventral view C retrolateral view Scale bar: Abbreviations: AS = alveolar sclerite; C = conductor; CP = cymbial process; CS = cymbial sclerite; E = embolus; EP = embolic process; MA = median apophysis; P = paracymbium; T = tegulum. Scale bar: equal for A, B and C.
Epigyne and habitus of Pimoa lata A epigyne, ventral view B vulva, dorsal view C male habitus, dorsal view D female habitus, dorsal view E female habitus, ventral view. Abbreviations: CO = copulatory opening; DP = dorsal plate of the epigyne; FD = fertilization duct; S = spermatheca; VP = ventral plate of epigyne. Scale bars: equal for D and E.
Male (
Female (Fig.
Shuiluodong Cave, Sichuan, China (Fig.
The male of this species is described for the first time.
Holotype ♂ (
The specific name refers to the type locality; adjective.
Both sexes of P. xinjianensis sp. nov. can be easily distinguished from other congeners by the strongly reduced (vestigial) eyes. The palp of P. xinjianensis sp. nov. can be distinguished from that of other congeners by the long embolic process (EP), about 2 times longer than the embolus (vs a short embolic process, almost as long as the embolus) (cf. Figs
Left palp of Pimoa xinjianensis sp. nov., holotype A prolateral view B ventral view C retrolateral view. Abbreviations: AS = alveolar sclerite; C = conductor; CP = cymbial process; CS = cymbial sclerite; E = embolus; EP = embolic process; P = paracymbium; T = tegulum. Scale bar: Equal for A, B and C.
Epigyne and habitus of Pimoa xinjianensis sp. nov., female paratype and male holotype A epigyne, ventral view B vulva, dorsal view C male habitus, dorsal view D female habitus, dorsal view E female habitus, ventral view. Abbreviations: CO = copulatory opening; DP = dorsal plate of the epigyne; FD = fertilization duct; S = spermatheca; VP = ventral plate of epigyne. Scale bars: Equal for D and E.
Male (holotype,
Female (paratype,
The manuscript benefitted greatly from comments by Yuri M. Marusik (Magadan, Russia), Stefano Mammola (Torino, Italy) and Ingi Agnarsson (Burlington, USA). Sarah Crews (San Francisco, USA) kindly checked English. Qingyuan Zhao and Zhe Zhao kindly helped with laboratory work. This study was supported by a grant from the National Natural Sciences Foundation of China to Shuqiang Li (NSFC-31530067).