Platocoelotes shuiensis Chen & Li

Chen, Lu, Li, Shuqiang & Zhao, Zhe, 2015, Five new Platocoelotes species (Araneae, Agelenidae) from caves in southern China, ZooKeys 512, pp. 1-18 : 6

Taxon classification Animalia Araneae Agelenidae

Platocoelotes shuiensis Chen & Li sp. n. Figs 5, 6, 11

Type material.

Holotype ♂: China: Guizhou: Liupanshui City: Shuicheng County: Yushexianggantang Village, Wuming Cave, N26°25'35", E104°48'55", elevation: 1345 m. 28.III.2013, H.F. Zhao and J.C. Liu. Paratypes: 10♀2♂, same data as holotype.

Etymology.

The specific name refers to the type locality; adjective.

Diagnosis.

The male can be distinguished from all other Platocoelotes species, except Platocoelotes ampulliformis , Platocoelotes brevis , Platocoelotes latus , Platocoelotes paralatus , Platocoelotes qinglinensis sp. n. and Platocoelotes strombuliformis , by having a slender anterior conductor apophysis and a long posterior conductor apophysis and can be distinguished from these six species by the anterior conductor apophysis being concave mesally (Fig. 5 A–C). The female can be distinguished from all other Platocoelotes species, except Platocoelotes latus , by having a large epigynal atrium and can be distinguished from Platocoelotes latus by the posteriorly situated epigynal hoods and twined spermathecae, forming quadrate structure (Fig. 6B; Xu and Li 2008: figs 15-16).

Description.

Male (holotype): Total length 4.75. Carapace 2.45 long, 2.15 wide. Abdomen 2.30 long, 1.50 wide. Eye sizes and interdistances: AME 0.17, ALE 0.15, PME 0.19, PLE 0.16; AME-AME 0.08, AME-ALE 0.03, PME-PME 0.06, PME-PLE 0.12. Leg measurements: I: 11.46 (2.81, 3.92, 2.81, 1.92); II: 9.44 (2.40, 3.20, 2.24, 1.60); III: 9.28 (2.56, 2.80, 2.40, 1.52); IV: 12.32 (3.28, 3.68, 3.52, 1.84). Chelicerae with three promarginal and two retromarginal teeth. Palp: patellar apophysis long; ventral patellar apophysis short, with blunt tip; RTA with pointed tip extending slightly beyond distal margin of tibia; dorso-retrolateral tibial apophysis short, about 1/3 length of RTA; cymbial furrow about 1/4 length of cymbium; anterior conductor apophysis long, approximately 1/3 length of cymbium, with blunt tip; posterior conductor apophysis long, about twice the length of cymbial furrow; dorsal conductor apophysis undeveloped; embolus filiform, arising at 6- o’clock position, forming a semicircle (Fig. 5 A–C).

Female (one of paratypes): Total length 5.96. Carapace 2.96 long, 2.80 wide. Abdomen 3.00 long, 2.04 wide. Eye sizes and interdistances: AME 0.13, ALE 0.14, PME 0.14, PLE 0.13; AME-AME 0.08, AME-ALE 0.04, PME-PME 0.07, PME-PLE 0.04. Leg measurements: I: 8.84 (2.38, 2.66, 2.20, 1.60); II: 7.57 (2.19, 2.50, 1.75, 1.24); III: 6.83 (1.80, 2.10, 1.73, 1.20); IV: 9.36 (2.50, 3.00, 2.50, 1.36). Epigyne: atrium large, occupying 4/5 of epigyne; hoods situated posteriorly, near the lateral atrial margins; spermathecae simple, convoluted, forming a square; spermathecal heads medium-sized, situated posteriorly and widely separated from each other; copulatory ducts absent (Fig. 6 A–B).

Distribution.

Known only from the type locality (Fig. 11).