Lineacoelotes zhongbaensis Z. Zhao & S. Li, 2019

Li, Bing, Zhao, Zhe, Chen, Haifeng, Wu, Zhiyan & Li, Shuqiang, 2019, New species of the coelotine spider genus Lineacoelotes (Araneae: Agelenidae) from China, Zootaxa 4623 (2), pp. 351-363 : 354-359

Lineacoelotes zhongbaensis Z. Zhao & S. Li , sp. n.

Figs 4–5 , 8

Type material. Holotype ♂ (IZCAS-Ar39288): Zhongba Village (N32.912870°, E108.135530°, 489 m), Houliu Township , Shiquan County, Ankang City, Shaanxi Province, China, 27. IX. 2013, Y. Li and J. Liu leg. Paratypes: 1♂ 1♀ (IZCAS-Ar39289-Ar39290): same data as holotype .

Etymology. The specific name referring to the type locality: Zhongba Village.

Diagnosis. Males of L. zhongbaensis sp. n. are most similar to those of L. funiushanensis . They can be distinguished from the latter by the patellar apophysis extending over the anterior edge of the patella, while the tip of the distal apophysis of the conductor (C2) is pointed in the new species ( Fig. 4 B–C) vs. patellar apophysis less than the anterior edge of patella and C2 blunt in L. funiushanensis (figs 8–10 in Xu et al., 2008). Females of L. zhongbaensis sp. n. are most similar to those of other Lineacoelotes species. They can be distinguished by the spermathecal heads that are bifurcate at the tip ( Fig. 5B ), and the epigynal teeth that are merged at base and located on the anterior edge of epigynal plate ( Fig. 5A ).

Description. Male (holotype). Carapace, clypeus, endites and labium brown, sternum lighter than carapace, legs darker than carapace. Abdomen grey-brown, dorsal view of abdomen with five chevron-shaped patterns, spinnerets and abdominal similar in colour and slightly yellowish-brown. Total length 6.61. Carapace 3.12 long, 2.23 wide. Abdomen 3.49 long, 1.98 wide. Eye sizes and interdistances: AME 0.13, ALE 0.17, PME 0.15, PLE 0.19; AME-AME 0.05, AME-ALE 0.05, AME-PME 0.08, ALE-PLE 0, PME-PME 0.08, PME-PLE 0.07. Leg measurements: I 12.53 (3.45, 4.18, 2.82, 2.08); II 10.55 (2.92, 3.24, 2.58, 1.81); III 10.24 (2.93, 3.01, 2.69, 1.61); IV 13.88 (3.70, 4.05, 3.92, 2.21). Chelicera with 3 promarginal and 2 retromarginal teeth. Palp: femur 2.5 times longer than wide; patella 2.4 times longer than wide; tibia 3.1 times longer than wide; patellar seta shorter than patellar; patella with 2 apophyses, lateral and dorsal; lateral one patellar apophysis wide and long, width about 1/2 the width of the patella, about 1.5 times longer than patella, dorsal one long, length about 1/2 the length of the patella; retrolateral tibial apophysis extending to the anterior margin of tibia, narrower than patellar apophysis and with a pointed tip; cymbial furrow about 1/2 the width of the cymbium and less than 1/2 of the cymbial length; embolus beginning at 7:30 o’clock position, long and distorted; conductor with two apophyses; the distal apophysis (C2) larger than the ventral apophysis (C3); median apophysis spoon-shaped ( Fig. 4 A–C).

Female (IZCAS -Ar39290). Spinnerets slightly cyan-blue, otherwise same as male. Total length 7.05. Carapace 3.38 long, 2.26 wide. Abdomen 3.67 long, 2.32 wide. Eye sizes and interdistances: AME 0.11, ALE 0.16, PME 0.14, PLE 0.15; AME-AME 0.05, AME-ALE 0.05, AME-PME 0.09, ALE-PLE 0, PME-PME 0.07, PME-PLE 0.09. Leg measurements: I 9.41 (2.56, 3.47, 1.93, 1.45); II 8.46 (2.53, 2.69, 1.92, 1.32); III 8.18 (2.36, 2.43, 2.08, 1.31); IV 10.12 (2.59, 3.47, 2.69, 1.37). Leg measurements: leg I missing; II 11.60 (3.53, 3.59, 2.56, 1.92); III 10.97 (3.21, 3.27, 2.82, 1.67); IV 14.56 (4.17, 4.49, 3.85, 2.05). Chelicera with 3 promarginal and 2 retromarginal teeth. Epigyne: plate 1.7 times wider than high; epigynal teeth long, length of teeth about 4/5 the height of plate, with merged bases while pointed and bent at tips; originating from the anterior margin of epigyne, extending over posterior margin of atrium, 4 times longer than wide; the distance between tooth about 1.5 times of its width; epigynal atrium situated at the central part of epigyne, wider than long; copulatory ducts originating from the posterior margin of the atrium and large; spermathecae oval, next to each other; spermathecal heads long and originating from the anterior part of the spermathecae, bifurcated at the tip; fertilization duct points to the left, hook-shaped at the tips ( Fig. 5 A–B).

Variation. Total length of males 6.61–7.11. Carapace length 3.12–3.38.

Distribution. Known only from Shaanxi, China ( Fig. 8 ).

Figures

FIGURE 4. Left male palp of Lineacoelotes zhongbaensis sp. n., holotype. A Prolateral view; B Ventral view; and C Retrolateral view. Scale bar: equal for A, B, C.

FIGURE 5. Epigyne and habitus of Lineacoelotes zhongbaensis sp. n. A Epigyne, ventral; B Internal genitalia, dorsal; C Male habitus, dorsal; D Female habitus, dorsal; and E Female habitus, ventral. Scale bars: equal for A and B, equal for C, D and E. Dotted circle shows bifurcated tip of spermathecal heads.

FIGURE 8. Type localities of new (green) and previously described (blue) species of Lineacoelotes. 1 L. bicultratus, 2 L. funiushanensis, 3 L. lifengyuanae sp. n., 4 L. longicephalus, 5 L. nitidus, 6 L. strenuus, 7 L. tiantaiensis sp. n., 8 L. zhongbaensis sp. n., and 9 L. ziboensis sp. n.