Plator hanyikani, Lin & Li, 2020

Lin, Yejie & Li, Shuqiang, 2020, Taxonomic studies on six species of the genus Plator (Araneae: Trochanteriidae) from China, Zoological Systematics 45 (1), pp. 24-39 : 28

Plator hanyikani sp. nov. ( Figs 3 , 8C , 10 I–L, 11)

Holotype ♂ (IZCAS-Ar397010), China, Yunnan Province, Chuxiong Yi Autonomous Region, Shuangbai County, Gelajie , 24.6787°N, 101.7450°E, 09 February 2019, Zheng Zhou leg. Paratype. 1♀ (IZCAS-Ar39711), same data as holotype .

Etymology. The species is named in honour of Mr. Yikan Han who has helped us greatly with this research; noun (name) in genitive case.

Diagnosis. This new species resembles P. qiului sp. nov. by the males having a slender embolus and median apophysis, and the females having similar copulatory openings, copulatory ducts and spermathecae. However, the male of P. hanyikani sp. nov. can be distinguished by the shape of the embolus (the middle of the embolus is more expanded in P. qiului sp. nov.), the presence of a stout and protruding apophysis at the embolic base, and the embolus and median apophysis terminating at the same level, near the apex of the palp. In the female, the positions of the copulatory openings and secondary spermathecae are at the same level, primary spermathecae oval, copulatory ducts well-developed, width of copulatory ducts is double the width of the primary spermathecae.

Description. Male (IZCAS-Ar397010). Total length 6.09, carapace 2.33 long, 3.70 wide, opisthosoma 3.68 long, 3.92 wide. Eye sizes and interdistances: AME 0.15, ALE 0.15, PME 0.11, PLE 0.15, AME–AME 0.11, AME–ALE 0.15, PME– PME 0.23, PME–PLE 0.27, AME–PME 0.10, ALE–PLE 0.19. Clypeus height 0.06. Chelicerae with four promarginal and three retromarginal teeth. Leg measurements: leg I: 8.75 (3.16 + 3.03 + 1.58 + 0.98), leg II: 12.88 (4.45 + 4.45 + 2.75 + 1.24), leg III: 11.84 (4.08 + 4.08 + 2.55 + 1.13), leg IV: 9.76 (3.36 + 3.16 + 2.23 + 1.01). Leg formula: 2341.

Male palp ( Figs 3 C–D, 8C). Retrolateral tibial apophysis absent. Cymbium oval, sub-tegulum red-brown, mostly hidden under tegulum, tegulum nearly oval, median apophysis thin, worm-shaped. embolus slightly curved, slender, embolic base with apophysis. Conductor membranous and surrounds half of the embolus, originating between median apophysis and embolic base.

Female (IZCAS-Ar39711). Total length 9.17, carapace 2.84 long, 4.50 wide, opisthosoma 6.15 long, 5.64 wide. Eye sizes and interdistances: AME 0.16, ALE 0.16, PME 0.14, PLE 0.20, AME–AME 0.30, AME–ALE 0.15, PME–PME 0.30, PME–PLE 0.39, AME–PME 0.13, ALE–PLE 0.28. Clypeus height 0.08. Chelicerae with four promarginal and two retromarginal teeth. Leg measurements: Leg I: 9.20 (3.32 + 3.32 + 1.11 + 1.45), leg II: 14.17 (4.90 + 5.15 + 2.78 + 1.34), leg III: 13.30 (4.70 + 4.60 + 2.80 + 1.20), leg IV: 12.24 (4.04 + 3.52 + 2.45 + 2.23). Leg formula: 2341.

Epigyne ( Figs 3 A–B) copulatory ducts curved, semicircular, well-developed. Secondary spermathecae and copulatory openings at the same level; secondary spermathecae small, size equal to secondary spermathecal head. Primary spermathecae oval, posterior to secondary spermathecae.

Distribution. Known only from the type locality.

Figures

Figure 3. Plator hanyikani sp. nov., paratype female and holotype male. A. Epigyne, ventral view. B. Vulva, dorsal view. C. Left palp, prolateral view. D. Same, retrolateral view. Scale bars=0.2mm.

Figure 8. Plator spp., male holotypes, left palp, ventral view. A. P. cyclicus sp. nov. B. P. dazhonghua sp. nov. C. P. hanyikani sp. nov. D. P. qiului sp. nov. Scale bars=0.2mm.

Figure 10. Habitus of four new Plator species, male dorsal view (A, E, I, M), ventral view (B, F, J, N) and female dorsal view (C, G, K, O), ventral view (D, H, L, P). A–D. P. cyclicus sp. nov. E–H. P. dazhonghua sp. nov. I–L. P. hanyikani sp. nov. M–P. P. qiului sp. nov. Scale bars=1.0mm.