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Sinodraconarius gen. n., a new genus of Coelotinae spiders from Southwest China (Araneae, Agelenidae)
expand article infoBing Li, Zhe Zhao§, Chuntian Zhang, Shuqiang Li§
‡ Shenyang Normal University, Shenyang, China
§ Institute of Zoology, Chinese Academy of Sciences, Beijing, China
Open Access

Abstract

A new genus of the subfamily Coelotinae F.O. Pickard-Cambridge, 1893, Sinodraconarius gen. n., with four new species, S. cawarongensis sp. n. (♂♀), S. muruoensis sp. n. (♂♀), S. sangjiuensis sp. n. (♂♀, type species), S. yui sp. n. (♂♀) and S. patellabifidus (Wang, 2003) comb. n., ex. Draconarius Ovtchinnikov, 1999 is described. The genus is restricted to Southwest China. Sinodraconarius gen. n. is most similar to Draconarius but can be distinguished by the shape of the copulatory organs. The DNA barcodes of all species were documented for future use.

Keywords

Asia, taxonomy, new combination, new species

Introduction

The spider subfamily Coelotinae (Araneae, Agelenidae) comprises 694 valid species belonging to 27 genera worldwide (World Spider Catalog 2018), of which 88% of the species are restricted to Asia, 8% to Europe and 4% to North America. So far, 339 coelotine species in 21 genera are known from China, including three genera erected in recent years: Flexicoelotes Chen, Li & Zhao, 2015, Papiliocoelotes Zhao & Li, 2016 and Sinocoelotes Zhao & Li, 2016.

Draconarius Ovtchinnikov, 1999, with 246 named species, is the largest genus of Coelotinae. Recent molecular studies suggested that Draconarius is polyphyletic and requires taxonomic rearrangements (Zhao and Li 2017). Here, we described a new genus, Sinodraconarius gen. n., with four new species.

Material and methods

The specimens were examined with a LEICA M205C stereomicroscope. The photographs were captured with an Olympus C7070 wide zoom digital camera (7.1 megapixels) mounted on an Olympus SZX12 dissecting microscope and an Olympus BX51 compound microscope. Photos from multiple focal planes were combined using Helicon Focus (Version 3.00) photo stacking software. Epigynes and male palps were examined after dissection from the spiders’ bodies. Epigynes were cleared by boiling in a 10% potassium hydroxide (KOH) water solution before taking photos of the vulva.

All measurements were obtained using a LEICA M205C stereomicroscope and are in millimeters. Eye sizes were measured as the maximum diameter from either the dorsal or frontal views. Leg measurements are given as: total length (femur, patellatibia, metatarsus, tarsus). The male palps depicted are the left ones. The terminology used in the text and figures follows Wang (2002). Abbreviations:

Morphological characters:

A epigynal atrium;

ALE anterior lateral eye;

AME anterior median eye;

AME–ALE distance between AME and ALE;

AME–AME distance between AME and AME;

AME–PME distance between AME and PME;

ALE–PLE distance between ALE and PLE;

C conductor;

CD copulatory duct;

CDA conductor dorsal apophysis;

CF cymbial furrow;

CO copulatory opening;

E embolus;

EB embolic base;

FD fertilization duct;

LTA retro-lateral tibial apophysis;

MA median apophysis;

PA patellar apophysis;

PLE posterior lateral eye;

PME posterior median eye;

PME–PLE distance between PME and PLE;

PME–PME distance between PME and PME;

R receptacle;

RTA retroventral tibial apophysis;

ST subtegulum;

T tegulum.

DNA barcodes were obtained for future use. A partial fragment of the mitochondrial cytochrome oxidase subunit I (COI) gene was amplified and sequenced for all species, using the following primers: Forward: LCO1490-oono (5’-CWACAAAYCATARRGATATTGG-3’) and Reverse: C1-N-2776 (5’-GGATAATCAGAATANCGNCGAGG-3’). For additional information on extraction, amplification and sequencing procedures, see Zhao and Li (2017). All sequences were analyzed using BLAST and are deposited in GenBank. The accession numbers are provided in Table 1.

Voucher specimen information.

Species GenBank accession number Sequence length Collection localities
S. cawarongensis sp. n. KY778914 1194bp Zhowagoin Township, Zayü, Tibet, China
S. muruoensis sp. n. KY778913 1194bp Zhowagoin Township, Zayü, Tibet, China
S. patellabifidus KY778910 1194bp Liuku Township, Lushui, Yunnan, China
S. sangjiuensis sp. n. KY778915 1194bp Zhowagoin Township, Zayü, Tibet, China
S. yui sp. n. KY778908 1194bp Segula Mountain, Nyingchi, Tibet, China

All of the specimens (including molecular vouchers) are deposited in the Institute of Zoology, Chinese Academy of Sciences (IZCAS), Beijing, China.

Taxonomy

Family Agelenidae C.L. Koch, 1837

Subfamily Coelotinae F.O. Pickard-Cambridge, 1893

Sinodraconarius Z. Zhao & S. Li, gen. n.

Type species

Sinodraconarius sangjiuensis Zhao & Li, sp. n.

Etymology

The generic name is derived from its similarity to Draconarius and the Latin adjective Sino- for Chinese referring to the main distribution region of the genus. The gender is masculine.

Diagnosis

The males of Sinodraconarius gen. n. are similar to those of Draconarius by having a patellar apophysis, two tibial apophyses (RTA and LTA) and a long median apophysis, but can be distinguished by the short cymbial furrow, less than 1/2 length of cymbium vs. long and generally more than 1/2 length of the cymbium in Draconarius; patellar apophysis bifurcate vs. not bifurcate in Draconarius. The females of Sinodraconarius gen. n. are similar to those of Draconarius by having a small epigynal atrium, with epigynal hoods located laterally, and the copulatory openings located centrally on the epigyne plate, but can be distinguished by lacking epigynal teeth; receptacles simple.

Description

Small to very large sized, with a total length of 6.90–17.60; body brownish to brown, with black setae. Carapace nearly pear-shaped, with longitudinal fovea and radial grooves; sternum brownish, heart-shaped. Abdomen nearly oval, grey to dark grey, with 4–5 grey chevron-like markings. Chelicerae with three promarginal and two retromarginal teeth. Leg formula (4 > 1 > 2 > 3). Male palp with one bifurcate patellar apophysis; two tibial apophyses (RTA and LTA), RTA extending beyond the tibia; cymbial furrow short, less than 1/2 length of cymbium; conductor short, with dorsal conductor apophysis; the apex of conductor with small basal lamella; embolus short; median apophysis long, finger-like; tegulum broad. Tibia strongly bent and dorsal part of tibia and patella bent almost to a right angle, ventral part of tibia at 45° angle. Epigyne: with septum; teeth lacking; atrium small, length of atrium two times longer than width, heart-shaped; epigynal hoods located laterally; copulatory openings located centrally on epigynal plate; copulatory ducts short, extending mesad of receptacles; receptacles broad, widely separated.

Comments

In addition to morphological study, we analyzed the relationships of coelotine spiders using eight genes from 286 species in 19 genera (Zhao and Li 2017). The molecular topologies inferred by three different approaches all supported Sinodraconarius gen. n. as a monophyletic group that is closely related to Draconarius. For details, please see SD001, SD002, SD019, SD028 and ZZ300 (Southern Coelotes groups) in Figure 3 and supplementary figures S4–S6 of Zhao and Li (2017).

Distribution

So far, the genus is known from Tibet and Yunnan, China (Fig. 11).

Sinodraconarius sangjiuensis Z. Zhao & S. Li, sp. n.

Figs 1, 2, 11

Type material

Holotype ♂ (IZCAS): China: Tibet: Zayü: Zhowagoin Township, Sangjiu Village, Mingqi group, 16 km SE of Yakou, N28.72276°, E97.70598°, 3698 m, 1.IX.2014, Jincheng Liu leg. Paratypes: 3♂♂, 3♀♀ (IZCAS): same data as holotype; 3♂♂ (IZCAS): China: Tibet: Zayü: Zhowagoin Township, Xiongjiu Village, N28.60677°, E97.28166°, 1938 m, 29.VIII.2014, Jincheng Liu leg.

Etymology

The specific name refers to the type locality, Sangjiu Village; adjective.

Diagnosis

The males can be easily distinguished from other Sinodraconarius gen. n. species by the patellar apophysis longer than the tibia vs. shorter than the tibia in other species (Fig. 1A–C). The females can be easy distinguished from other Sinodraconarius gen. n. species by the epigynal hoods in the center of the epigynal plate vs. anterolaterally in other species (Fig. 2A–B).

Figure 1. 

Left male palp of Sinodraconarius sangjiuensis sp. n., holotype. A Prolateral view B Ventral view C Retrolateral view. Scale bar: equal for A, B, C.

Figure 2. 

Epigyne and habitus of Sinodraconarius sangjiuensis sp. n. A Epigyne, ventral B Vulva, dorsal C Male habitus, dorsal D Female habitus, dorsal E Female habitus, ventral. Scale bar equal for D and E.

Description

Male (holotype). Total length 12.25. Carapace 5.75 long, 4.50 wide. Abdomen 6.50 long, 4.00 wide. Eye sizes and interdistances: AME 0.15, ALE 0.23, PME 0.20, PLE 0.23; AME–AME 0.10, AME–ALE 0.15, AME–PME 0.23, ALE–PLE 0, PME–PME 0.18, PME–PLE 0.20. Leg measurements: I 23.72 (7.69, 7.05, 5.77, 3.21); II 22.43 (7.69, 6.41, 5.45, 2.88); III 20.19 (6.73, 5.77, 5.13, 2.56); IV 24.67 (8.01, 7.05, 6.73, 2.88). Palp: patella longer than tibia; patellar apophysis thin and long, about three times longer than wide, with two branches and ventral branch larger than dorsal one; anterior 1/3 of RTA extending beyond the tibia, apex of RTA slightly bent; LTA about half of the RTA length; conductor short, apex of conductor pointed and bent retrolaterally; apex of median apophysis pointed; dorsal conductor apophysis broad, the visible part (between conductor and tegulum) subtriangular; embolus beginning at 5:30 o’clock position (Fig. 1A–C).

Female (paratype). Total length 12.50. Carapace 6.00 long, 4.25 wide. Abdomen 6.50 long, 4.25 wide. Eye sizes and interdistances: AME 0.15, ALE 0.25, PME 0.20, PLE 0.26; AME–AME 0.10, AME–ALE 0.10, AME–PME 0.25, ALE–PLE 0, PME–PME 0.15, PME–PLE 0.30. Leg measurements: I 18.59 (6.41, 6.09, 3.84, 2.25); II 18.27 (6.41, 5.77, 3.84, 2.25); III 17.45 (6.09, 5.27, 3.84, 2.25); IV 21.15 (6.41, 6.41, 5.45, 2.88). Epigyne: apex of the V-shaped septum tapering; atrium two times longer than wide, occupying approx. 1/8 of epigyne plate; copulatory ducts hidden by receptacles in ventral view, hidden by epigyne in dorsal view; receptacles broad and separated by 1/2 width of receptacle; head of receptacles located anteriorly, broad and short, 1/4 length and 1/6 width of receptacles (Fig. 2A–B).

Variation

Total length of males 9.94–12.25 (n = 7) and of females 11.22–16.70 (n = 3).

Distribution

Known only from Zayü, Tibet (Fig. 11).

Sinodraconarius cawarongensis Z. Zhao & S. Li, sp. n.

Figs 3, 4, 11

Type material

Holotype ♂ (IZCAS): China: Tibet: Zayü: Cawarong Township, 3.5 km E of Jumuchang, N28.55227°, E98.19554°, 3145 m, 7.IX.2014, Jincheng Liu leg. Paratypes: 13♂♂, 4♀♀ (IZCAS): same data as holotype; 9♂♂, 1♀ (IZCAS): China: Tibet: Zayü: Zhowagoin Township, Ridong Village, N28.49183°, E98.11320°, 3495 m, 4.IX.2014, Jincheng Liu; 6♂♂, 2♀♀ (IZCAS): China: Tibet: Zayü: Zhowagoin Township, 6 km N of Muruo Village, N28.59332°, E98.02774°, 3955 m, 5.IX.2014, Jincheng Liu leg.

Etymology

The specific name refers to the type locality, Cawarong Township; adjective.

Diagnosis

The males are similar to S. patellabifidus by having an indistinct LTA and a long median apophysis but can be differentiated by the branches of the patellar apophysis, with the ventral branch larger than the dorsal branch in retrolateral view vs. the ventral branch equal to the dorsal branch in S. patellabifidus (Figs 3A–C, 7A–C). The females can be differentiated from S. sangjiuensis sp. n. by having the head of receptacles located anteriorly vs. mediolaterally in S. sangjiuensis sp. n. and the septum indistinct (apex of the septum is tapering in S. sangjiuensis sp. n.) (Figs 2A–B, 4A–B, 8A–B).

Figure 3. 

Left male palp of Sinodraconarius cawarongensis sp. n., holotype. A Prolateral view B Ventral view C Retrolateral view. Scale bar equal for A, B, C.

Description

Male (holotype). Total length 8.45. Carapace 4.50 long, 3.35 wide. Abdomen 3.95 long, 2.65 wide. Eye sizes and interdistances: AME 0.12, ALE 0.18, PME 0.15, PLE 0.16; AME–AME 0.09, AME–ALE 0.05, AME–PME 0.15, ALE–PLE 0, PME–PME 0.13, PME–PLE 0.15. Leg measurements: I 14.86 (5.25, 4.81, 2.88, 1.92); II 13.99 (5.25, 4.25, 2.88, 1.61); III 13.73 (4.75, 3.85, 3.21, 1.92); IV 16.28 (5.45, 4.49, 4.10, 2.24). Palp: with one crescent-like bifurcate patellar apophysis, ventral branch is larger than dorsal branch of patellar apophysis; anterior 1/5 of RTA extending beyond the tibia; LTA indistinct; cymbial furrow less than 1/3 of cymbium length; apex of conductor pointed and bent retrolaterally; median apophysis finger-like, covered in short hairs; dorsal conductor apophysis broad, the visible part (between conductor and tegulum) subtriangular; embolus broad, beginning at position 8:30 o’clock (Fig. 3A–C).

Female (paratype). Total length 6.90. Carapace 3.40 long, 2.30 wide. Abdomen 3.50 long, 2.50 wide. Eye sizes and interdistances: AME 0.09, ALE 0.16, PME 0.14, PLE 0.15; AME–AME 0.08, AME–ALE 0.05, AME–PME 0.18, ALE–PLE 0, PME–PME 0.13, PME–PLE 0.14. Leg measurements: I 8.68 (3.30, 2.75, 1.66, 0.97); II 8.16 (3.05, 2.49, 1.66, 0.96); III 7.98 (3.15, 2.24, 1.61, 0.98); IV 9.82 (3.75, 2.75, 2.11, 1.21). Epigyne: rectangular; septum indistinct; hoods located anterolaterally on the plate; atrium 3 times longer than wide, anterior part slightly wider than posterior part, occupying about 1/8 of epigynal plate; receptacles broad, separated by a width of a receptacle; the head of receptacles located anteriorly (Fig. 4A–B).

Figure 4. 

Epigyne and habitus of Sinodraconarius cawarongensis sp. n. A Epigyne, ventral B Vulva, dorsal C Male habitus, dorsal D Female habitus, dorsal E Female habitus, ventral. Scale bar equal for D and E.

Variation

Total length of males (n = 29) 7.69–10.26 and of females (n = 7) 6.90–8.34.

Distribution

Known only from Zayü, Tibet (Fig. 11).

Sinodraconarius muruoensis Z. Zhao & S. Li, sp. n.

Figs 5, 6, 11

Type material

Holotype ♂ (IZCAS): China: Tibet: Zayü: Zhowagoin Township, Muruo Village, Gaoshan Mountain pasture, N28.62049°, E98.05035°, 4347 m, 5.IX.2014, Jincheng Liu leg. Paratypes: 5♂♂, 3♀♀ (IZCAS): same data as holotype; 1♂, 5♀♀ (IZCAS): China: Tibet: Zayü: Zhowagoin Township, Muruo Village, Qimala Yakou, N28.62049°, E98.05035°, 4657 m, 2.IX.2014, Jincheng Liu leg.

Etymology

The specific name refers to the type locality, Muruo Village; adjective.

Diagnosis

The males of the new species are similar to these of S. sangjiuensis sp. n. by having a ventral branch of the patellar apophysis that is larger than the dorsal branch but can be easily distinguished from S. sangjiuensis sp. n. by the apex of conductor being straight vs. bent in S. sangjiuensis sp. n. (Figs 1A–C, 5A–C). The females of the new species are similar to S. sangjiuensis sp. n. by the apex of septum tapering but can be easily distinguished from by having the hoods and the head of the receptacles located anteriorly rather than medially (Figs 2A–B, 6A–B).

Description

Male (holotype). Total length 13.50. Carapace 6.50 long, 4.50 wide. Abdomen 7.00 long, 4.00 wide. Eye sizes and interdistances: AME 0.10, ALE 0.23, PME 0.20, PLE 0.25; AME–AME 0.13, AME–ALE 0.15, AME–PME 0.30, ALE–PLE 0, PME–PME 0.20, PME–PLE 0.15. Leg measurements: I 27.84 (8.64, 8.63, 6.73, 3.84); II 27.21 (8.63, 8.65, 6.41, 3.52); III 24.99 (8.01, 7.05, 6.41, 3.52); IV 29.48 (9.62, 8.02, 8.01, 3.83). Palp: with one bifurcate patellar apophysis (ventral branch of patellar apophysis larger than dorsal one) and one small apophysis; LTA indistinct; cymbial furrow short, about 1/5 of the of cymbial length; conductor short, extending anteriorly, the apex of conductor pointed and bending retro-anteriorly; median finger-like; dorsal the visible part of conductor apophysis (between conductor and tegulum) subtriangular, shorter than conductor; embolus beginning at position 7:30 o’clock (Fig. 5A–C).

Figure 5. 

Left male palp of Sinodraconarius muruoensis sp. n., holotype. A Prolateral view B Ventral view C Retrolateral view. Scale bar equal for A, B, C.

Female (paratype). Total length 11.00. Carapace 5.00 long, 4.00 wide. Abdomen 6.00 long, 4.00 wide. Eye sizes and interdistances: AME 0.15, ALE 0.22, PME 0.20, PLE 0.24; AME–AME 0.10, AME–ALE 0.10, AME–PME 0.15, ALE–PLE 0, PME–PME 0.15, PME–PLE 0.25. Leg measurements: I 16.88 (6.08, 5.44, 3.12, 2.24); II 15.69 (6.08, 4.48, 3.21, 1.92); III 15.40 (5.77, 4.49, 3.23, 1.91); IV 18.58 (6.73, 5.12, 4.81, 1.92). Epigyne: with V-shaped septum, apex of septum tapering; hoods located laterally; atrium two times wider than long, occupying approx. 1/7 of epigynal plate; receptacles separated by the width of a receptacle; the head of the receptacles broad, short, located anteriorly (Fig. 6A–B).

Figure 6. 

Epigyne and habitus of Sinodraconarius muruoensis sp. n. A Epigyne, ventral B Vulva, dorsal C Male habitus, dorsal D Female habitus, dorsal E Female habitus, ventral. Scale bar equal for D and E.

Variation

Total length of males (n = 7) 11.86–17.60 and of females (n = 8) 6.90–11.00.

Distribution

Known only from Zayü, Tibet (Fig. 11).

Sinodraconarius patellabifidus (Wang, 2003), comb. n.

Figs 7, 8, 11

Draconarius patellabifidus Wang 2003: 542, fig. 49A–D (♂♀); Wang et al. 2010: 81, figs 331–351 (♂♀); Zhu et al. 2017: 338, fig. 209A–D (♂♀).

Material examined

2♀♀ (IZCAS): China: Yunnan Province: Nujiang Lisu Autonomous Prefecture: Lushui County, Liuku Township, N25.80797°, E98.84226°, 1220 m,18.IX.2014, Jincheng Liu leg.; 1♂, 1♀ (IZCAS): China: Yunnan Province: Nujiang Lisu Autonomous Prefecture: Lushui County, Luzhang Township, Fengxue Yakou, N25.97244°, E98.68376°, 3150 m, 19.IX.2014, Jincheng Liu leg.

Diagnosis

The males can be differentiated from S. sangjiuensis sp. n. by the ventral branch of the patellar apophysis which is the same length as the dorsal branch vs. larger than dorsal one in S. sangjiuensis sp. n. (Figs 1A–C, 7A–C). The females can be differentiated from S. sangjiuensis sp. n. by the head of the receptacles located anteriorly vs. mediolaterally in S. sangjiuensis sp. n.; septum indistinct (apex of the septum is tapering in S. sangjiuensis sp. n.) (Figs 2A–B, 8A–B).

Figure 7. 

Left male palp of Sinodraconarius patellabifidus A Prolateral view B Ventral view C Retrolateral view. Scale bar equal for A, B, C.

Figure 8. 

Epigyne and habitus of Sinodraconarius patellabifidus A Epigyne, ventral B Vulva, dorsal C Male habitus, dorsal D Female habitus, dorsal E Female habitus, ventral. Scale bar equal for D and E.

Description

Described by Wang (2003).

Variation

Total length of females (n = 3) 8.75–11.80.

Distribution

Known only from Yunnan (Fig. 11; Wang 2003: map 17; Wang et al. 2010: 545).

Sinodraconarius yui Z. Zhao & S. Li, sp. n.

Figs 9, 10, 11

Coelotes himalayaensis Hu 2001: 134, fig. 45.3–4 (♂ only, ♀ mismatched).

Draconarius himalayaensis Wang 2003: 534 (♂ only, ♀ mismatched); Zhu et al. 2017: 289, fig. 166C–D (♂ only, ♀ mismatched)

Type material

Holotype ♂ (IZCAS): China: Tibet: Nyingchi: Segula Mountain, N29.605017°, E94.609117°, 4184 ± 4 m, 11.X.2010, Hao Yu leg. Paratypes: 2♂♂ (IZCAS): same data as holotype; 1♀ (IZCAS): China: Tibet: Nyingchi: Positive face of Segula Mountain, N29.607583°, E94.608767°, 4190 ± 13 m, 12.VIII.2010, Hao Yu leg.

Etymology

The specific name is after Hao Yu, the collector of specimens used in this study; noun (name) in genitive case.

Diagnosis

The males are similar to these of S. sangjiuensis sp. n. by the ventral branch of the patellar apophysis larger than dorsal one and the apex of the conductor pointed and bent retrolaterally, but can be easily distinguished from S. sangjiuensis sp. n. by the short palp (Figs 1A–C, 9A–C). The females are similar to S. sangjiuensis sp. n. by having the apex of the septum tapering but can be easily distinguished from S. sangjiuensis sp. n. by the epigynal hoods located anterolaterally vs. mediolaterally in S. sangjiuensis sp. n. (Figs 2A–B, 10A–B).

Figure 9. 

Left male palp of Sinodraconarius yui sp. n., holotype. A Prolateral view B Ventral view C Retrolateral view. Scale bar equal for A, B, C.

Description

Male (holotype). Total length 7.59. Carapace 4.00 long, 2.60 wide. Abdomen 3.59 long, 2.56 wide. Eye sizes and interdistances: AME 0.09, ALE 0.20, PME 0.14, PLE 0.19; AME–AME 0.08, AME–ALE 0.05, AME–PME 0.16, ALE–PLE 0, PME–PME 0.09, PME–PLE 0.13. Leg measurements: I 12.15 (4.06, 4.00, 2.68, 1.41); II 10.22 (3.44, 3.50, 2.03, 1.25); III 9.99 (3.28, 3.00, 2.40, 1.31); IV 12.82 (4.06, 3.80, 3.40, 1.56). Palp: ventral branch of patellar apophysis larger than dorsal one; anterior 1/5 part of RTA extending beyond the tibia; LTA obvious; cymbial furrow less than 1/4 of cymbium length; the apex of conductor concave and spiral; median apophysis conspicuous, finger-like, the apex of the median apophysis expanded and open; dorsal conductor apophysis broad, the visible part (between conductor and tegulum) hidden by conductor in ventral view; embolus beginning at position 10 o’clock (Fig. 9A–C).

Female (paratype). Total length 7.89. Carapace 3.40 long, 2.40 wide. Abdomen 4.49 long, 2.40 wide. Eye sizes and interdistances: AME 0.10, ALE 0.18, PME 0.15, PLE 0.15; AME–AME 0.11, AME–ALE 0.06, AME–PME 0.15, ALE–PLE 0, PME–PME 0.10, PME–PLE 0.15. Leg measurements: I 9.17 (3.58, 2.88, 1.75, 0.96); II 8.66 (3.07, 2.88, 1.75, 0.96); III 8.47 (3.20, 2.56, 1.75, 0.96); IV 11.05 (3.59, 3.52, 2.50, 1.44). Epigyne: apex of the V-shaped septum tapering; hoods located laterally; atrium two times wider than long, occupying approx. 1/4 of epigynal plate; receptacles spaced by the width of a receptacle; the head of the receptacles broad and short, located anteriorly (Fig. 10A–B).

Figure 10. 

Epigyne and habitus of Sinodraconarius yui sp. n. A Epigyne, ventral B Vulva, dorsal C Male habitus, dorsal D Female habitus, dorsal E Female habitus, ventral. Scale bar equal for D and E.

Comments

The male of the new species was first described by Hu (2001) as the allotype of Coelotes himalayaensis and later transferred from Coelotes to Draconarius by Wang (2003). However, we found that the male and female of D. himalayaensis were mismatched. Therefore, the male is established as a new species here, and both sexes are described.

Variation

Total length of males (n = 3) 7.05–7.59.

Distribution

Known only from Nyingchi, Tibet (Fig. 11).

Figure 11. 

Localities of Sinodraconarius species in the Southwest China. 1 S. cawarongensis sp. n. 2 S. muruoensis sp. n. 3 S. patellabifidus 4 S. sangjiuensis sp. n. 5 S. yui sp. n.

Acknowledgements

The manuscript benefitted greatly from comments by Yuri M. Marusik, Yanfeng Tong, Mykola Kovblyuk and Mikhail Omelko. Sarah Crews kindly checked English. Xiaoqing Zhang and Francesco Ballarin checked an early version of the manuscript. This study was supported by the National Natural Sciences Foundation of China (NSFC) to Zhe Zhao (NSFC-31772418), Chuntian Zhang (NSFC-31750002) and Shuqiang Li (NSFC-31530067, 31471960).

References

  • Hu JL (2001) Spiders in Qinghai-Tibet Plateau of China. Henan Science and Technology Publishing House, 658 pp.
  • Ovtchinnikov SV (1999) On the supraspecific systematics of the subfamily Coelotinae (Araneae, Amaurobiidae) in the former USSR fauna. Tethys Entomological Research 1: 63–80.
  • Pickard-Cambridge FO (1893) Handbook to the study of British spiders (Drassidae and Agalenidae). British Naturalist 3: 117–170.
  • Wang XP (2003) Species revision of the coelotine spider genera Bifidocoelotes, Coronilla, Draconarius, Femoracoelotes, Leptocoelotes, Longicoelotes, Platocoelotes, Spiricoelotes, Tegecoelotes, and Tonsilla (Araneae: Amaurobiidae). Proceedings of the California Academy of Sciences 54: 499–662.
  • Wang XP, Griswold CE, Miller JA (2010) Revision of the genus Draconarius Ovtchinnikov 1999 (Agelenidae: Coelotinae) in Yunnan, China, with an analysis of the Coelotinae diversity in the Gaoligongshan Mountains. Zootaxa 2593: 1–127. https://doi.org/10.11646/zootaxa.2593.1.1
  • World Spider Catalog (2018) Natural History Museum Bern. Version 18.5. http://wsc.nmbe.ch [accessed 4 January 2018]
  • Zhao Z, Li S (2017) Extinction vs. rapid radiation: the juxtaposed evolutionary histories of coelotine spiders support the Eocene-Oligocene orogenesis of the Tibetan Plateau. Systematic Biology 66(6): 988–1006. https://doi.org/10.1093/sysbio/syx042
  • Zhu MS, Wang XP, Zhang ZS (2017) Fauna Sinica: Invertebrata Vol. 59: Arachnida: Araneae: Agelenidae and Amaurobiidae. Science Press, Beijing, 727 pp.