Plator dazhonghua, 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 : 27-28

Plator dazhonghua sp. nov. ( Figs 2 , 8B , 10 E–H, 11)

Holotype ♂ (IZCAS-Ar39705), China, Sichuan Province, Ganzi Zang Autonomous Region, Zhubalong, Gunre , 29.6703°N, 98.9961°E, elev. 2454 m, 18 July 2019, Zhigang Chen & Yan Tong leg. Paratypes. 1♂ (IZCAS-Ar39706), same data as holotype ; 3♀ (IZCAS-Ar39707-Ar39709), same data as holotype, but 06 August 2019, Shuo Qi & Chao Wu leg.

Etymology. The species name is a noun in apposition derived from the Chinese pinyin "dazhonghua" (Greater China) and refers to the species distribution.

Diagnosis. The males of this species can be distinguished from others by having a short, strong embolus, a sheet-shaped median apophysis, terminus with hook, while the females can be distinguished by the epigyne with the width being greater than the length, two hoods anteriorly, copulatory ducts indistinct, secondary spermathecae folded with copulatory ducts.

Description. Male (IZCAS-Ar39705). Total length 6.34, carapace 3.84 long, 2.59 wide, opisthosoma 3.80 long, 3.68 wide. Eye sizes and interdistances: AME 0.14, ALE 0.16, PME 0.22, PLE 0.25, AME–AME 0.09, AME–ALE 0.06, PME– PME 0.21, PME–PLE 0.26, AME–PME 0.08, ALE–PLE 0.23. Clypeus height 0.09. Chelicerae with three promarginal and one or two retromarginal teeth. Leg measurements: leg I: 9.49 (3.32 + 3.24 + 2.02 + 0.91), leg II: 14.26 (4.60 + 5.19 + 3.32 + 1.15), leg III: 13.60 (4.40 + 4.90 + 3.22 + 1.08), leg IV: 10.89 (3.76 + 3.56 + 2.62 + 0.95). Leg formula: 2341.

Male palp ( Figs 2 C–D, 8B). Retrolateral tibial apophysis absent. Cymbium oval, sub-tegulum brown, hidden under tegulum and embolus. Tegulum irregularly shaped, with prolateral angular protrusion, median apophysis sheet-shaped, terminus with hook. embolus short, robust, conical, without obvious apophysis. Conductor membranous, triangular, originating between median apophysis and embolic base.

Female (IZCAS-Ar39709). Total length 10.38, carapace 3.68 long, 5.58 wide, opisthosoma 6.54 long, 6.41 wide. Eye sizes and interdistances: AME 0.14, ALE 0.18, PME 0.14, PLE 0.28, AME–AME 0.15, AME–ALE 0.19, PME–PME 0.33, PME–PLE 0.46, AME–PME 0.18, ALE–PLE 0.36. Clypeus height 0.11. Chelicerae with five promarginal and two retromarginal teeth. Leg measurements: Leg I: 13.01 (4.90 + 4.70 + 2.25 + 1.16), leg II: 19.61 (6.86 + 7.18 + 4.12 + 1.45), leg III: 19.03 (6.54 + 6.86 + 4.30 + 1.33), leg IV: 15.55 (5.64 + 5.05 + 3.72 + 1.14). Leg formula: 2341.

Epigyne ( Figs 2 A–B) width greater than length, two hoods anteriorly. Copulatory ducts indistinct. Secondary spermathecae close to copulatory openings, spermathecal head obvious. Primary spermathecae posterior, oval, posterior to secondary spermathecae, primary spermathecal head obvious.

Distribution. Known only from the type locality.

Figures

Figure 2. Plator dazhonghua 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.