Arctosa tangguoi Wang, Li & Zhang, 2021

Wang, Lu-Yu, Li, Shuqiang & Pham, Dinh-Sac, 2024, The wolf spiders of three national parks in Northern Vietnam (Araneae: Lycosidae), Zootaxa 5537 (2), pp. 234-244 : 238-240

Arctosa tangguoi Wang, Li & Zhang, 2021

Figures 3–4 , 7

Arctosa tangguoi Wang, Li & Zhang , in Wang et al. 2021a: 25, figs 16–18 (♂) (examined).

Type material. CHINA: Holotype male, Lingshui County, Diaoluo Mountain Nature Reserve , 18°41.445′N, 109°52.410′E, elev. 620 m, 16.IV.2009, G. Tang leg. ( IZCAS), examined.

Material examined. VIETNAM: 1 (Ar 45275) male, Ninh Binh Province, Cuc Phuong National Park , 20°21.216′N, 105°37.025′E, elev. 436 m, 8 October 2007, Dinh-Sac Pham leg.; 1 female (Ar 45276) , Ninh Binh Province, Cuc Phuong National Park , 20°17.066′N, 105°10.253′E, elev. 273 m, 6 November 2007, Dinh-Sac Pham leg.; 1 female (Ar 45277) , Vinh Phuc Province, Tam Dao National Park , 1–29 February 2008, Dinh-Sac Pham leg.; 1 female (Ar 45278) , Ninh Binh Province, Cuc Phuong National Park , 20°20.566′N, 105°36.024′E, elev. 408 m, 5 July 2007, Dinh-Sac Pham leg.

Diagnosis: This species resembles A. hainan Wang, Li & Zhang, 2021 ( Wang et al. 2021a: 24, figs 10–12) in having arc-shaped median apophysis with anterior furrow, small and membranous conductor, broad and rectangular septum, arc-shaped and short spermathecal stalks, but differs by the sword-shaped median apophysis (vs. slightly curved with a hook-shaped tip in A. hainan ), the axe-shaped terminal apophysis (vs. knife-shaped in A. hainan ), the crescent-shaped tip of the median apophysis (vs. longer than wide with broad tip in A. hainan ) ( Figs 3A–B , 4C–F ), and by the spermathecal heads larger and closer to each other (vs. small and more widely separated from each other in A. hainan ) ( Figs 3D , 4H ).

Description: Male ( Fig. 4A ) description see Wang et al. (2021a).

Female ( Fig. 4B ) total length 6.07. Prosoma 3.30 long, 2.26 wide; opisthosoma 3.18 long, 1.89 wide. Carapace brown. Eye sizes and interdistances: AME 0.10, ALE 0.10, PME 0.27, PLE 0.22; AME–AME 0.09, AME–ALE 0.06, PME–PME 0.18, PME–PLE 0.23. Clypeus height 0.09. Chelicerae brown, with three promarginal and three retromarginal teeth. Endites and labium yellow-brown, longer than wide. Sternum yellow-brown, with sparse brown setae. Legs yellow-brown. Leg measurements: I 7.01 (2.00, 2.43, 1.51, 1.07); II 6.68 (1.86, 2.32, 1.47, 1.03); III 6.27 (1.69, 1.90, 1.67, 1.01); IV 1.30 (2.48, 2.98, 2.88, 1.30). Leg formula: 4123. Opisthosoma oval. Dorsum greybrown, with three pairs of bright specks. Venter yellow-brown.

Epigyne ( Figs 3C–D , 4G–H ). Septum broad and rectangular, with a noticeably narrow stem. Copulatory openings located anterior-laterally. Spermathecal heads round, situated close to each other. Spermathecal stalks short and arc-shaped. Fertilization ducts crescent-shaped.

Distribution. Vietnam (Ninh Binh, Vinh Phuc) ( Fig. 7 ), China (Hainan).

Figures

FIGURE 3. Arctosa tangguoi Wang, Li & Zhang, 2021. A—left male palp, ventral view; B—same, retrolateral view; C— epigyne, ventral view; D—vulva, dorsal view.

FIGURE 4. Arctosa tangguoi Wang, Li & Zhang, 2021. A—male habitus, dorsal view; B—female habitus, dorsal view; C—left male palp, bulbus, ventral view; D—same, retrolateral view; E—left male palp, ventral view; F—same, retrolateral view; G—epigyne, ventral view; H—vulva, dorsal view.

FIGURE 7. The location of the three national parks in Vietnam where wolf spiders were collected for this study.