Xerolycosa mongolica ( Schenkel, 1963 )

Wang, Lu-Yu, Marusik, Yuri M., Peng, Xian-Jin & Zhang, Zhi-Sheng, 2024, Review of the wolf spider genus Xerolycosa Dahl, 1908 from China (Araneae: Lycosidae), Zootaxa 5463 (1), pp. 47-62 : 53-55

Xerolycosa mongolica ( Schenkel, 1963) (AE古ªDƃ)

Figures 6A–D , 7A–I , 8A–E , 14

Arctosa mongolica Schenkel, 1963: 353 , figs 204a–c (♀).

Xerolycosa undulata Chen, Song & Kim, 1998: 71 , figs 7–12 (♂); Song et al. 1999: 346, fig. 202J (♂). (synonymized by Marusik et al. 2011: 17)

Xerolycosa mongolica : Marusik et al. 2011: 17, figs 1–3, 10, 18–21, 23a–b, 29–30, 35–38 (♂ ♀); Marusik & Kovblyuk 2011: 183, fig. 22.3 (♀).

Type material. female holotype deposited in the Muséum national d’histoire naturelle ( MNHN), Paris, France, not examined.

Material examined. CHINA: Inner Mongolia: 87 males and 50 females, Xilinguole League, Xilinhot City, Baiyinxile Pasture , pitfall traps, 44°1.546′N, 116°25.247′E, elev. 1194 m, 20–25 June, 2013 ( SWUC) ; 1 female, Abagaqi, Chagannuoer lakeside, 43°25.367′N, 114°53.367′E, elev. 1013 m, 1 July 2002, Z.S. Zhang leg. ( SWUC) ; 3 males, Keshiketengqi, Dalinuoer lakeside, 43°17.203′N, 116°38.660′E, elev. 1194 m, 3 July 2002, Z.S. Zhang leg. ( SWUC) ; 1 male and 2 females, Baotou City, Bailingmiao Town, Xilamuren Grasslands , Tabu River , 41°19.918′N, 111°13.885′E, elev. 1582 m, 18 June 2015, T. Lu & G.Q. Huang leg ( SWUC) .

Diagnosis. This species can be distinguished from other Xerolycosa species by the terminal apophysis thin and unbranched, embolus thin and threadlike, and ventral process of median apophysis cuspidal ( Figs 6A–B , 7C–G , 8A–E ). The female genitalia can be distinguished from those of other species by the atria as long as wide, septal stem narrower than 1/3 of septal width, and distance between spermathecal heads as equal as two times of width of spermathecal heads ( Figs 6C–D , 7H–I ).

Description. Male ( Fig. 7A ) total length 5.34. Carapace 2.68 long, 1.78 wide; opisthosoma 2.94 long, 1.80 wide. Carapace brown, with yellow brown mark. Eye sizes and interdistances: AME 0.12, ALE 0.10, PME 0.20, PLE 0.18; AME–AME 0.12, AME–ALE 0.06, PME–PME 0.30, PME–PLE 0.33. Clypeus height 0.19. Chelicerae, labium and endites brown. Sternum black brown, with white and brown setae. Leg measurements: I 6.75 (1.94, 2.24, 1.55, 1.02); II 6.26 (1.87, 1.98, 1.49, 0.92); III 6.08 (1.67, 1.81, 1.64, 0.96); IV 8.83 (2.45, 2.57, 2.59, 1.22). Leg formula: 4123. Opisthosoma oval. Dorsum brown, with yellow brown mark, cardiac mark yellow indistinct. Venter yellow brown.

Male pedipalp ( Figs 6A–B , 7C–G , 8A–E ). Subtegulum large and baso-prolaterally located. Terminal apophysis membranous, long and unbranched. Embolus thin and long. Conductor membranous, with a rounded end. Median apophysis strong, with a corniform ventral process.

Female ( Fig. 7B ) total length 5.62. Carapace 2.59 long, 1.67 wide; opisthosoma 3.22 long, 2.00 wide, color same as in male. Eye sizes and interdistances: AME 0.11, ALE 0.09, PME 0.23, PLE 0.20; AME–AME 0.11, AME–ALE 0.06, PME–PME 0.31, PME–PLE 0.35. Clypeus height 0.12. Leg measurements: I 5.81 (1.74, 1.99, 1.21, 0.87); II 5.21 (5.58, 1.63, 1.20, 0.80); III 5.20 (1.54, 1.49, 1.38, 0.79); IV 7.91 (2.18, 2.33, 2.18, 1.22). Leg formula: 4123.

Epigyne ( Figs 6C–D , 7H–I ). Septum wider than long, nose-shaped, with septum stem narrower than 1/3 of its width. Atria large, slant and as long as wide. Copulatory openings located at posterior end under the lateral margins of septum. Spermathecal heads slightly inflated, stalks short and twisty.

Distribution. China (Inner Mongolia and Heilongjiang, Fig. 14 ); Russia (South Siberia).

Figures

FIGURE 6. Xerolycosa mongolica (Schenkel, 1963). A. Left male pedipalp, ventral view; B. Same, retrolateral view; C. Epigyne, ventral view; D. Vulva, dorsal view.

FIGURE 7. Xerolycosa mongolica (Schenkel, 1963) from Baiyinxile Pasture, Xilinhot City, Xilinguole League, Inner Mongolia. A. Male habitus, dorsal view; B. Female habitus, dorsal view; C. Left male pedipalp, bulb, ventral view; D. Same, retrolateral view; E. Left male pedipalp, ventral view; F. Same, retrolateral view; G. Terminal apophysis and embolus, ventral view; H. Epigyne, ventral view; I. Vulva, dorsal view.

FIGURE 8. Xerolycosa mongolica (Schenkel, 1963). A. Left male pedipalp, bulb, ventral view; B. Same, retrolateral view; C. Median apophysis, ventral view; D Median apophysis and conductor, retrolateral view; E. Terminal apophysis and embolus, ventral view.

FIGURE 14. Geographic distribution of Xerolycosa in China.