Research Article |
Corresponding author: Jie Liu ( sparassidae@aliyun.com ) Academic editor: Cristina Rheims
© 2019 He Zhang, Peter Jäger, Jie Liu.
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 H, Jäger P, Liu J (2019) Establishing a new species group of Pseudopoda Jäger, 2000 with the description of two new species (Araneae, Sparassidae). ZooKeys 879: 91-115. https://doi.org/10.3897/zookeys.879.35110
|
The huntsman spider genus Pseudopoda Jäger, 2000 contains 140 species worldwide, of which 61 have been described from China. In this paper, this knowledge is increased by the description of two new species from Yunnan Province in China. These new species, P. physematosa sp. nov. (♀) and P. semilunata sp. nov. (♂♀), are treated with five previously described ones, P. bibulba Xu & Yin, 2000 (♂♀), P. signata Jäger, 2001 (♂♀), P. wu Jäger, Li & Krehenwinkel, 2015 (♂♀), P. yinae Jäger & Vedel, 2007 (♂), and P. yunnanensis Yang & Hu, 2001 (♂♀), as the newly defined Pseudopoda signata species group. The P. signata group can be distinguished from other groups within Pseudopoda by the male palps with long, slightly broad, S-shaped embolus, small but distinct tegular apophysis, pronounced dRTA and reduced vRTA, and by the female with V-shaped or W-shaped anterior margins of lateral lobes, membranous and wide first winding, long and strongly curved SIDS (sclerotised internal duct system), the latter mostly covered by the first winding. The monophyly of this group is also supported by molecular phylogenetic results mainly based on Chinese Pseudopoda species. In addition, photographs of P. bibulba (♂♀), P. signata (♂♀), and P. yunnanensis (♂♀) are provided. P. bibulba is newly recorded from Guizhou Province and P. signata is newly recorded from Yunnan Province.
Biodiversity, systematics, taxonomy, huntsman spiders, China
Bayesian tree based on the COI + ITS2 dataset including 144 Pseudopoda individuals belonging to 44 species. Numbers on nodes are posterior probabilities; bootstrap support from ML analyses is indicated as solid stars for values > 95%, open stars > 50–95%. Red clade indicates the P. signata group, blue clade indicates the outgroups. Phylogenetic tree cited from
All specimens were preserved in 75% ethanol and examined with an Olympus SZX16 stereomicroscope; details were further investigated with an Olympus BX51 compound microscope. Male and female copulatory organs were examined and illustrated after dissection from the spider bodies, vulvae were cleared with Proteinase K. Habitus photos were obtained using a Leica 205C digital microscope.
Leg measurements are shown as: total length (femur, patella, tibia, metatarsus, tarsus). The numbers of spines are listed for each segment in the following order: prolateral, dorsal, retrolateral, ventral (in femora and patellae, ventral spines are absent, and the fourth digit is omitted in the spination formula). The body size classes and illustration of schematic course of internal duct system follow
We evaluated the most recent phylogenetic evidence for relationships among various Pseudopoda species (Fig.
Abbreviations used throughout the text are given below.
Somatic morphology:
ALE anterior lateral eyes;
AME anterior median eyes;
CH clypeus height;
CO copulatory opening;
dRTA dorsal part/branch of RTA;
DS dorsal shield of prosoma;
E embolus;
Fe femur;
FD fertilisation duct;
FW first winding;
Mt metatarsus;
OS opisthosoma;
Pa patella;
PLE posterior lateral eyes;
PME posterior median eyes;
Pp palp;
RTA retrolateral tibial apophysis;
SIDS sclerotised internal duct system;
ST subtegulum;
T tegulum;
Ti tibia;
I, II, III, IV – legs I to IV;
vRTA ventral part/branch of RTA.
Institutes:
CBEE Centre for Behavioural Ecology and Evolution, College of Life Sciences, Hubei University, Wuhan, China;
HUST School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning, Hubei, China;
SWUC College of Life Sciences, Southwest University, Chongqing, China.
Definition. This group can be recognised by the combination of the following characters:
1. Embolus distinctly longer than tegulum, slightly S-shaped, arising from tegulum between 7- AND 9-o’clock-position (Fig.
2. Tegulum with distinctly short tegular outgrowth (Fig.
3. dRTA pronounced, vRTA short, dRTA two times longer than vRTA (Fig.
4. Anterior margins of lateral lobes bent medially, roughly “U” or “V”-shaped (Fig.
5. First winding membranous and wide, covering large part of the sclerotised internal duct system (Fig.
6. Sclerotised part of internal duct system long, strongly curved, tube-shaped (Fig.
Pseudopoda bibulba Xu & Yin, 2000 A left male palp, ventral B epigyne, ventral C schematic course of internal duct system in right part, dorsal D vulva, dorsal. Black arrow pointing to anterior margin of lateral lobe, blue arrow to tegular outgrowth. Abbreviations: C–conductor; dRTA–dorsal retrolateral tibial apophysis; E–embolus; vRTA–ventral retrolateral tibial apophysis; T–tegulum; CO–copulatory opening; LL–lateral lobes; FD–fertilisation duct; FW–first winding; SIDS–sclerotised internal duct system. Scale bars: 0.5 mm.
Composition. P. bibulba Xu & Yin, 2000, P. physematosa sp. nov., P. semilunata sp. nov., P. signata Jäger, 2001, P. wu Jäger, Li & Krehenwinkel, 2015, P. yinae Jäger & Vedel, 2007, P. yunnanensis Yang & Hu, 2001.
Distribution. China (Guizhou, Sichuan, Yunnan provinces) (Fig.
Heteropoda bibulba Xu & Yin, 2000: 37, figs 1–3 (description of female).
Pseudopoda bibulba: Jäger & Yin, 2001: 126 (transfer from Heteropoda); Jäger & Vedel, 2007: 15, figs 44–59 (description of male, redescription of female).
CHINA, Guizhou Province: 3 females, Liupanshui City, Zhongshan District, Xianshui slope martyr cemetery, 26.61°N, 104.84°E, 1966 m, 11 April 2016, Yang Zhong, Yang Zhu & He Zhang leg. (CBEE, LJ02358-LJ02360); Yunnan Province: 19 males, 14 females, Kunming City, Xishan Scenic Area, 24.96°N, 102.63°E, 1975 m, 14 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ02361-LJ02393); 1 female, Kunming City, Xishan Scenic Area, 24.96°N, 102.63°E, 2204 m, 13 October 2016, Guiqiang Huang, Xiangbo Guo and Yanchao Wang leg. (CBEE, LJ02394); 19 males, 14 females, Chuxiong City, Zixishan Scenic Area, 25.01°N, 101.42°E, 2527 m, 15 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ02395-LJ02427); 5 males, 3 females, Nujiang Lisu Autonomous Prefecture, Lanping Bai Nationality Autonomous Prefecture, Mt. Erwu, 26.43°N, 99.41°E, 2377 m, 28 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ02428-LJ02435); 6 males, 5 females, Wei Xi Lisu Autonomous County, Pagoda of Cultural Prosperity, 27.18°N, 99.29°E, 2294 m, 26 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ02436-LJ02446).
See
China (Guizhou, new province record; Yunnan) (Fig.
Holotype female: CHINA: Yunnan Province: Lijiang City, Yongsheng County, Lingyuan Temple, 26.70°N, 100.78°E, 2305 m, 25 August 2013, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ01667); Paratypes: 2 females, with same data as holotype. (CBEE, LJ01668-LJ01669).
The specific name is derived from the Latin adjective physematosus, -a, -um, meaning swollen, referring to the shape of SIDS in dorsal view (Fig.
Pseudopoda physematosa sp. nov. differs from other species of the P. signata group, except P. bibulba, by the SIDS with well developed twisted loops, in ventral view. It can be distinguished from P. bibulba by the following characters: anterior margins of lateral lobes longer than half the width of epigynal field in P. physematosa, but shorter in P. bibulba; SIDS folded, with swollen tip in P. physematosa, but not in P. bibulba (Fig.
Male unknown. Female (holotype): Measurements: small-sized Heteropodinae. Body length 8.6–9.9. DS length 4.4, width 3.3, OS length 5.5, width 3.6. Eyes: AME 0.24, ALE 0.31, PME 0.18, PLE 0.22, AME-AME 0.18, AME-ALE 0.11, PME-PME 0.15, PME-PLE 0.24, AME-PME 0.27, ALE-PLE 0.24, CH AME 0.35, CH ALE 0.28. Leg formula: II-I-IV-III. Spination: Pp 131, 101, 2121, 1014; Fe I–II 323, III 322, IV 322; Pa I–III 101, IV 100; Ti I–II 2228, III–IV 2126; Mt I–II 2024, III 3025, IV 3036. Measurement of palps and legs: Pp 4.5 (1.3, 0.5, 1.0, -, 1.7); I 12.8 (3.8, 1.9, 2.8, 3.1, 1.2); II 13.0 (4.0, 1.3, 3.0, 3.2, 1.5); III 11.1 (3.1, 1.6, 2.7, 2.6, 1.1); IV 11.6 (3.1, 1.7, 3.0, 2.7, 1.1). Promargin of chelicerae with three teeth, retromargin with four teeth, cheliceral furrow with ca. 32 denticles. Epigynal field almost as wide as long, with anterior bands included in the field. Epigyne with lateral lobes touching each other posteriorly. The anterior margins of lateral lobes forming a “V”. FW covering most of SIDS, the latter folded in the middle part (Fig.
China (Yunnan) (Fig.
Holotype male: CHINA: Yunnan Province: Lijiang City, Black Dragon Pool Park, 26.89°N, 100.24°E, 2659 m, 20 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ01905); Paratypes: 7 males, 8 females, with same data as holotype. (CBEE, LJ01906-LJ01920); 2 males, 2 females, Diqing Tibetan Autonomous Prefecture, Deqin County, Fei Lai Temple scenic area, 28.42°N, 98.87°E, 3458m, 25 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ01921-LJ01924).
The specific name is derived from the Latin adjective semilunatus, -a, -um, meaning lunate, referring to the shape of anterior margins of lateral lobes (Fig.
P. semilunata sp. nov. differs from other members in this group by the following characters: dRTA with distinct sub-apical cavity, anterior margins of lateral lobes not strongly curved as in other species but together forming a semicircle. Males of this species are similar to those of P. wu in having a twisted embolus tip but can be distinguished by embolic tip forming a semicircle and conductor present (embolic tip forming a full circle, conductor entirely reduced in P. wu) (Figs
Pseudopoda semilunata sp. nov. A left male palp, ventral B epigyne, ventral C schematic course of internal duct system in right art, dorsal D vulva, dorsal. Abbreviations: C–conductor; dRTA–dorsal retrolateral tibial apophysis; T–tegulum; vRTA–ventral retrolateral tibial apophysis; CO–copulatory opening; LL–lateral lobes; FD–fertilisation duct; FW–first winding; SIDS–sclerotised internal duct system. Scale bars: 0.5 mm.
Male (holotype): Measurements: small-sized Heteropodinae. Body length 7.0–9.5. DS length 4.1, width 3.5, OS length 5.0, width 3.4. Eyes: AME 0.16, ALE 0.23, PME 0.19, PLE 0.24, AME-AME 0.13, AME-ALE 0.21, PME-PME 0.24, PME-PLE 0.27, AME-PME 0.37, ALE-PLE 0.40, CH AME 0.26, CH ALE 0.21. Leg formula: II-I-IV-III. Spination: Pp 131, 101, 2121, 1014; Fe I–II 323, III 322, IV 322; Pa I–III 101, IV 100; Ti I–II 2228, III–IV 2126; Mt I–II 2024, III 3025, IV 3036. Measurement of palps and legs: Pp 5.0 (1.3, 0.6, 0.9, -, 2.2); I 13.9 (3.9, 1.0, 3.6, 4.0, 1.4); II 14.3 (4.1, 1.2, 4.2, 3.3, 1.5); III 12.2 (3.5, 0.9, 3.4,3.0, 1.4); IV 13.7 (4.5, 1.2, 3.3, 3.2, 1.5). Promargin of chelicerae with three teeth, retromargin with four teeth, cheliceral furrow with ca. 20 denticles. Palp as in diagnosis. Conductor arising from tegulum at 12-o’clock-position, basally folded. Tegular outgrowth short, claviform. Embolus arising from tegulum at 8.30-o’clock-position, long, well developed, with abruptly tapering apical part with additional loop. Spermophore visible submarginally on retrolateral tegulum in ventral view. RTA arising proximally on Ti, with broad ventral part, its distal end bent, bowl-shaped (Figs
Female: Measurements: small-sized Heteropodinae. Body length 8.0–9.5. DS length 4.0, width 3.6, OS length 4.6, width 2.8. Eyes: AME 0.15, ALE 0.20, PME 0.16, PLE 0.20, AME-AME 0.27, AME-ALE 0.13, PME-PME 0.33, PME-PLE 0.41, AME-PME 0.35, ALE-PLE 0.32, CH AME 0.31, CH ALE 0.29. Leg formula: II-I-IV-III. Spination: Pp 131, 101, 2121, 1014; Fe I–II 323, III 322, IV 322; Pa I–III 101, IV 100; Ti I–II 2228, III–IV 2126; Mt I–II 2024, III 3025, IV 3036. Measurements of palps and legs: Pp 4.4 (1.3, 0.6, 0.9, -, 1.6); I 9.9 (3.1, 0.8, 2.6, 2.4, 1.0); II 10.9 (3.1, 1.2, 3.0, 2.6, 1.0); III 7.3 (1.9, 0.8, 2.2, 1.5, 0.9); IV 8.8 (2.8, 0.8, 2.4, 2.0, 0.8). Cheliceral furrow with three anterior and four posterior teeth, and with ca. 18 denticles. Epigynal field wider than long. Anterior and posterior margins of lateral lobes almost parallel. FW well developed, covering the entire sclerotised part of internal duct system, the latter folded. FD long, narrow (Fig.
China (Yunnan) (Fig.
Pseudopoda signata Jäger, 2001: 50, f. 29h-j (description of female).
Pseudopoda signata:
CHINA, Yunnan Province: 6 males, 7 females, Dali Bai Autonomous Prefecture, Cangshan Scenic Area, 25.01°N, 100.14°E, 2645 m, 17 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ01695-LJ01707); 12 males, 6 females, Chuxiong City, Zixishan Scenic Area, 25.01°N, 101.42°E, 2476 m, 15 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ01708-LJ01719, LJ01785-LJ01790).
Pseudopoda signata Jäger, 2001 A left male palp, ventral B epigyne, ventral C schematic course of internal duct system in right part, dorsal D vulva, dorsal. Abbreviations: C–conductor; E–embolus; dRTA–dorsal retrolateral tibial apophysis; T–tegulum; vRTA–ventral retrolateral tibial apophysis; CO–copulatory opening; LL–lateral lobes; FD–fertilisation duct; FW–first winding; SIDS–sclerotised internal duct system. Scale bars: 0.5 mm.
See
China (Yunnan, new province record; Sichuan) (Fig.
Sinopoda yunnanensis Yang & Hu, 2001: 18, figs 1–3 (description of female).
Pseudopoda yunnanensis: Jäger & Vedel, 2007: 17, figs 60–62 (Transfer from Sinopoda); Yang & Chen, 2008: 810, figs 1–13 (Description of male, redescription female).
CHINA, Yunnan Province: 2 males, 2 females, Nujiang Lisu Autonomous Prefecture, Lanping Bai Nationality Autonomous Prefecture, Mt. Erwu, 26.43°N, 99.41°E, 2366 m, 28 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ01535-LJ01538); 42 males, 26 females, Diqing Tibetan Autonomous Prefecture, Shangri-La County, Mt. Wufeng, 27.18°N, 99.29°E, 3528 m, 23 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ01539-LJ01606); 18 males, 17 females, Dali Bai Autonomous Prefecture, Jianchuan County, Mt. Qianshi, 26.53°N, 99.88°E, 2647 m, 19 May 2014, Yang Zhong & Xiaowei Cao leg. (CBEE, LJ01501-LJ01534).
Pseudopoda yunnanensis Yang & Hu, 2001 A left male palp, ventral B epigyne, ventral C Schematic course of internal duct system in right part, dorsal D vulva, dorsal. Abbreviations: C–conductor; dRTA–dorsal retrolateral tibial apophysis; E–embolus; vRTA–ventral retrolateral tibial apophysis; T–tegulum; CO–copulatory opening; LL–lateral lobes; FD–fertilisation duct; FW–first winding; SIDS–sclerotised internal duct system. Scale bars: 0.5 mm.
See
China (Yunnan) (Fig.
We thank Prof. Zhisheng Zhang (SWUC), Luyu Wang (SWUC), Yanchao Wang (SWUC), Kaiyi Xu (SWUC), Yang Zhong (HUST), Xiaowei Cao (CBEE), and Yang Zhu (CBEE) for providing Sparassidae specimens. We also thank Matjaž Kuntner (Evolutionary Zoology Laboratory, Department of Organisms and Ecosystems Research, National Institute of Biology, Ljubljana, Slovenia) for help in improving this paper. The manuscript greatly benefited from comments by Dr Cristina Rheims (Instituto Butantan, Sao Paulo, Brazil), Dr Ivan L. F. Magalhaes (Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Buenos Aires, Argentina), and Dr Majid Moradmand (University of Isfahan, Isfahan, Iran). This study was financially supported by the National Natural Sciences Foundation of China (NSFC-31572236/31970406/31772420).