Arctosa tangguoi Wang, Li & Zhang, 2021

Wang, Luyu, Lu, Tian, Cai, Ducheng, Barrion, Alberto Tomas, Heong, Kong-Luen, Li, Shuqiang & Zhang, Zhisheng, 2021, Review of the wolf spiders from Hainan Island, China (Araneae: Lycosidae), Zoological Systematics 46 (1), pp. 16-74 : 25-26

Arctosa tangguoi Wang, Li & Zhang , sp. nov. ( Figs 16A–E , 17A–D, 18A–B)

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

Etymology. The specific epithet is taken from the name of Mr. Guo Tang in honour of his great contribution to Chinese arachnology; noun (name) in genitive case.

Diagnosis. The new species resembles A. hainan Wang, Li & Zhang , sp. nov. ( Figs 10C–F , 11A–F, 12A–B) but differs by the sword-shaped median apophysis ( Figs 16B–E , 17A–B, D, 18A–B), which is slightly curved with a hook-shaped tip in the latter ( Figs 10C–F , 11A–D, F, 12A–B). Terminal apophysis axe-shaped in the new species ( Figs 16B–E , 17A–C, 18A– B), knife-shaped in A. hainan Wang, Li & Zhang , sp. nov. ( Figs 10C–F , 11A–E, 12A–B). Embolus crescent-shaped in the new species ( Figs 16B–E , 17A–C, 18A–B), longer than wide with broad tip in the latter ( Figs 10C–F , 11A–E, 12A–B).

Description. Male holotype ( Fig. 16A ) total length 4.40. Carapace 2.55 long, 1.81 wide; opisthosoma 1.91 long, 1.39 wide. Carapace black-brown. Eye region black-brown. Fovea longitudinal. Cervical groove and radial furrows indistinct. Eye sizes and interdistances: AME 0.08, ALE 0.09, PME 0.21, PLE 0.16; AME–AME 0.06, AME–ALE 0.04, PME–PME 0.13, PME–PLE 0.16. Clypeus height 0.06. Chelicerae brown. Labium yellow-brown. Endites yellow-brown, longer than wide. Sternum yellow-brown, with sparse brown setae. Legs yellow-brown, with brown pigmentation. Leg measurements: I 5.23 (1.65, 1.92, 1.01, 0.65); II 5.14 (1.46, 1.76, 1.13, 0.79); III 4.97 (1.39, 1.55, 1.32, 0.71); IV 7.25 (1.87, 2.27, 2.06, 1.05). Dorsum of opisthosoma black-brown, with 5 pairs of white spots, cardiac mark distinct. Ventrum yellow-brown.

Palp ( Figs 16B–E , 17A–D, 18A–B). Median apophysis sword-shaped, with an anterior furrow. Terminal apophysis longer than wide, distally axe-shaped. Conductor small, membranous. Embolus crescent-shaped with an outgrowth medially.

Female unknown.

Distribution. Known only from the type locality, Hainan Island, China.

Figures

Figure 10. Arctosa hainan Wang, Li & Zhang, sp. nov., holotype male (A, E–F), paratype male (C–D), paratype female (B, G–H). 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. Scale bars: A–B = 2.0mm; C–D, G–H=0.2mm; E–F=0.3mm.

Figure 16. Arctosa tangguoi Wang, Li & Zhang, sp. nov., holotype male. A. Male habitus, dorsal view; B. Left male palp, ventral view; C. Same, retrolateral view; D. Right male palp, bulbus, ventral view (overturn); D. Same, retrolateral view (overturn). Scale bars: A=1.0mm; B–C=0.2mm; D–E=0.1mm.