Pinelema yaosaensis, Wang & Li, 2016

Wang, Chunxia & Li, Shuqiang, 2016, Four new species of the spider genus Pinelema (Araneae, Telemidae) from caves in South China, Ecologica Montenegrina 7, pp. 546-566 : 561

Pinelema yaosaensis sp. nov.

Figs 13–16 , 17

Type material. Holotype: male, Yaosa Da Cave [23º30.433'N, 104º54.437'E, 1301 m, T: 22°C, H: 71%], Moyao , Xichou Town , Wenshan Zhuang and Miao Autonomous Prefecture, Yunnan Province, China, 6 August 2009, Z. Yao, C. Wu & X. Wang leg. Paratypes: 2 females, same data as holotype .

Etymology. The specific name refers to the type locality; adjective.

Diagnosis. This new species is similar to P. huobaensis sp. nov., but can be distinguished by having eyes and whitish opisthosoma (eyes absent, opisthosoma blue in P. huobaensis sp. nov.) ( Figs 13A , 14A ); embolus about 3.4 times shorter than tegulum ( Figs 13C–D , 15A–B ) (1/4 the length of tegulum in P. huobaensis sp. nov.); and in the female spermatheca shaped as a golf-club, with a spherical distal part ( Figs 14C , 16A, C ) (spermatheca sacciform, swollen in middle, and contracted at distal part in P. huobaensis sp. nov.).

Description. Male (holotype). Total length 1.40 ( Fig. 13A ). Carapace 0.56 long, 0.54 wide. Opisthosoma 0.70 long, 0.62 wide. Sternum 0.38 long, 0.38 wide. Carapace, legs, labium, endites and chelicerae yellow, sternum brown. Carapace with a pair of setae at the retrolateral side of eyes. Leg measurements: I 4.64 (1.37, 0.25, 1.40, 1.00, 0.62); II 3.79 (1.12, 0.25, 1.12, 0.75, 0.55); III 2.62 (0.87, 0.15, 0.70, 0.50, 0.40); IV 3.50 (1.10, 0.25, 1.00, 0.65, 0.50). Opisthosoma blue, oval dorsally. Palp measurements: 0.95 (0.22, 0.10, 0.20, -, 0.43). Palp tarsus ( Figs 13B–D , 15A–B, E ): bulb oval, subequal to the length of tarsus, length about 2 times longer than wide, embolus short, approximately 1/5 the length of the tegulum.

Female. Similar to male in coloration and general features, but with a larger body size and shorter legs. Total length 1.56 ( Figs 14A–B ). Carapace 0.62 long, 0.56 wide. Opisthosoma 0.86 long, 0.70 wide. Sternum 0.39 long, 0.37 wide. Leg measurements: I 4.37 (1.30, 0.25, 1.35, 0.85, 0.62); II 3.72 (1.12, 0.25, 1.10, 0.70, 0.55); III 2.65 (0.90, 0.15, 0.70, 0.50, 0.40); IV 3.49 (1.12, 0.25, 1.00, 0.62, 0.50). Epigynum ( Fig. 16B ) with a row of short, slender setae posterior to epigastric furrow. Spermatheca ( Figs 14C , 16A, C ) golf-rod-shaped, distal part spherical.

Variation. Females (1.54–1.56) (n=2).

Distribution. Known only from the type locality in Yunnan, China ( Fig. 17 )

Figures

FIGURE 13. Pinelema yaosaensis sp. nov., male holotype. A. Habitus, dorsal view; B. Embolus tip, apical view; C. Palp, prolateral view; D. Palp, retrolateral view.

FIGURE 14. Pinelema yaosaensis sp. nov., female paratype. A. Habitus, dorsal view; B. Habitus, ventral view; C. Spermatheca, lateral view.

FIGURE 15. Pinelema yaosaensis sp. nov., male holotype. A. Palp, prolateral view; B. Palp, retrolateral view. C. Chelicera, posterior view; D. Colulus, ventral view; E. Embolus tip, apical view. Scale bars: 0.10 mm.

FIGURE 16. Pinelema yaosaensis sp. nov., female paratype. A. Spermatheca, ventral view; B. Epigynum, dorsal view; C. Spermatheca, lateral view. Scale bars: 0.10 mm.

FIGURE 17. Localities records for four new species of the genus Pinelema from Southwest China.