Plator kamurai, 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 : 29-31

Plator kamurai sp. nov. ( Figs 4 , 9C , 11 )

Holotype ♂ (IZCAS-Ar397012), China, Tibet, Zayu County, Zhowagoin Township, Zhala , Zhubagen , 28.6035°N, 97.2603°E, elev. 1903 m, 28 August 2014, Jincheng Liu leg.

Etymology. The species is named in honour of Dr. Takahide Kamura, a well-known arachnologist from Japan, for his contribution to the current study; noun (name) in genitive case.

Diagnosis. This species can be distinguished from other congeners by the rectangular embolus, large median apophysis (in ventral view) and the black margin of the carapace.

Description. Male (IZCAS-Ar397012). Total length 6.54, carapace 2.50 long, 3.80 wide, opisthosoma 4.00 long, 3.80 wide. Eye sizes and interdistances: AME 0.15, ALE 0.14, PME 0.08, PLE 0.20, AME–AME 0.08, AME–ALE 0.10, PME– PME 0.23, PME–PLE 0.24, AME–PME 0.11, ALE–PLE 0.21. Clypeus height 0.04. Chelicerae with four promarginal and two retromarginal teeth. Leg measurements: leg I: 9.25 (3.36 + 3.19 + 1.68 + 1.02), leg II: 13.52 (4.45 + 5.00 + 2.84 + 1.23), leg III: 14.12 (4.38 + 4.60 + 2.89 + 2.25), leg IV: 11.11 (3.84 + 3.56 + 2.63 + 1.08). Leg formula: 3241.

Male palp ( Figs 4 A–B, 9C). Retrolateral tibial apophysis extended ventrally. Cymbium oval, sub-tegulum red-brown, mostly hidden under tegulum. Tegulum nearly oval, median apophysis well-developed, terminus higher than embolus. Embolus short, rectangular, terminus flat with a small apophysis next to embolic opening, embolic base with a stout conical apophysis. Conductor membranous, surrounding half of the embolus, originating between the median apophysis and embolic base.

Distribution. Known only from the type locality.

Figures

Figure 4. Plator kamurai sp. nov., holotype male. A. Left palp, prolateral view. B. Same, retrolateral view. C. Habitus, dorsal view. D. Habitus, ventral view. Scale bars:A–B =0.2 mm; C–D=1.0mm.

Figure 9. Plator spp., left palp, ventral view. A. P. nipponicus, male from Shannxi, China. B. P. nipponicus, male from Osaka, Japan. C. P.kamuraisp. nov., holotype. Scale bars=0.2mm.

Figure 11. Locality records of five new Plator species from China.