Pancorius wesolowskae, Wang & Wang, 2020

Wang, Wei-Hang & Wang, Cheng, 2020, Description of two new species of the jumping spider genus Pancorius Simon 1902 (Araneae: Salticidae) from Southwest China, Zootaxa 4899 (1), pp. 354-362 : 359

Pancorius wesolowskae sp. nov.

Figures 14–23

Etymology. The new species is named in honour of Prof. Helena Wanda Wesołowska (Wrocław, Poland), who has contributed an enormous amount to studies of the Palaearctic and African jumping spider fauna.

Diagnosis. The male of the new species closely resembles P. wangdicus ( Żabka 1990: figs 16–18), known only from the male from Bhutan, but can be distinguished by: 1) RTA is shorter and relatively blunt ( Figs 19–20 ) vs more elongated and pointed in P. wangdicus ; 2) the lower margin of the prosoma is uncovered ( Fig 14 ) vs covered with white seta bands in P. wangdicus . The female resembles P. cadus Jastrzębski, 2011 ( Jastrzębski 2011: figs 7–8) in general epigyne structure, but can be distinguished by the copulatory openings, which are slit-shaped in the new species rather than C-shaped in P. cadus , and by the distance between the copulatory ducts, which is less than the distance between receptacles in the new species compared to more than twice greater than the distance between receptacles in P. cadus .( Figs 21–22 ).

Description. Male (Holotype, SCAU-GZ-20130508001). Total length 6.30, PL 3.36, PW 2.82, OL 2.94, OW 1.98. Eye sizes: AME 0.76, ALE 0.41, PME 0.14, PLE 0.37; AER 2.43, PER 2.19, EFL 1.50. Clypeus height 0.18. Legs: I 5.78 (1.81, 0.85, 1.51, 0.92, 0.69); II 5.10 (1.67, 0.75, 1.29, 0.71, 0.68); III 6.64 (2.28, 0.82, 1.46, 1.28, 0.80); IV 5.92 (1.82, 0.69, 1.34, 1.40, 0.67).

Prosoma dark-brown, broadened, with a central red-brown area, and covered with sparse white setae behind the PLEs. White setae around the AER. Clypeus brown, covered with white setae centrally. Chelicerae dark-brown, with two promarginal and one retromarginal teeth. Maxillae and labium dark-brown. Sternum elliptical, brownish. Legs brownish-yellow to dark brown. Opisthosoma dark grey, covered with dense translucent yellowish setae, sparsely scattered with bristles. Dorsum with a longitudinal light broad central band followed by several pairs of inclined extensions. Venter light grey, with four dotted lines. Spinnerets dark brown to greyish-yellow. Leg I fairly strong, patellar dorsum and tibia with cluster of brush-like dark setae, and all legs with spines.

Palp: tibia slightly longer than 1/3 cymbial length. RTA almost triangular, blunt and short. Tegulum with a domed lobe, extended from the proximal margin. Embolus thick, basally expanded into a keel shape, and tapered to a blunt tip.

Female (Paratype, SCAU-GZ-20130508002). Total length 7.93, PL 3.40, PW 2.85, OL 4.53, OW 3.44. Eye sizes: AME 0.77, ALE 0.45, PME 0.13, PLE 0.39; AER 2.53, PER 2.25, EFL 1.67. Clypeus height 0.24. Legs: I 5.57 (1.74, 0.85, 1.44, 0.81, 0.73); II 5.32 (1.78, 0.93, 1.16, 0.75, 0.70); III 6.88 (2.49, 0.88, 1.44, 1.14, 0.93); IV 6.57 (2.21, 0.71, 1.43, 1.43, 0.79). Leg formula: 3412. Habitus similar to that of male. Leg I more slender than male, without brush-like dark setae. Epigyne: epigynal plate posteriorly widened, anterior margin notably convex. Copulatory openings slit-shaped. Epigynal pockets paired, slightly wide than long, located posteriorly, relatively close to each other. Copulatory ducts strongly sclerotized, stretched posteriorly. Receptacles almost round, obviously separated from each other by less than 1/2 their diameter. Fertilization ducts originated from middle of inner sides of receptacles.

Type material. Holotype ³: CHINA: Guizhou: Jiangkou County, Machaohe of Fanjingshan National Nature Reserve , 27°52’55.67’’N, 108°47’54.83’’E, 615 m a.s.l., leg. Cheng Wang, Ming-yong Liao & Bo Yu, 8.V.2013 (collected by beating shrubs) (SCAU-GZ-20130508001).

Paratype: Same data as holotype, 1♀ (SCAU-GZ-20130508002) .

Distribution. Known only from the type locality.

Habitat. The specimens were collected from a low altitude mountain region, where the habitat was relatively undisturbed. Based on the authors’ experience during fieldwork, species of the genus Pancorius is nearly restricted to habitats that have not been severely influenced by human activities, and potential distribution of the new species will be possibly concentrated in the regions that share a similar environment with the type locality, i.e. humid marginal areas of mountain forests.

Figures

FIGURES 14–17. Pancorius wesolowskae sp. nov. 14 Male, dorsal view; 15 Same, ventral view; 16 Female, dorsal view; 17 Same, ventral view). Scale bars = 0.5 mm.

FIGURES 18–22. Pancorius wesolowskae sp. nov. 18–20 Left male palp in prolateral (18), ventral (19) and retrolateral views (20); 21 Epigyne, ventral view; 22 Vulva, dorsal view. Scale bars = 0.1 mm.

FIGURE 23. Map of type localities: circle 1 Pancorius candidus sp. nov. circle 2 P. wesolowskae sp. nov.