Allotrochosina serpentina Wang & Li 2024, sp. nov.
Creators: name: Wang, Lu-Yu
name: Li, Shuqiang
name: Pham, Dinh-Sac
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Lycosidae
Allotrochosina
Allotrochosina serpentina

description: Allotrochosina serpentina Wang & Li sp. nov.
Figures 1–2, 7
Type material. Holotype male (Ar45247). VIETNAM: Vinh Phuc Province, Tam Dao National Park, 21°29.029′N, 105°37.192′E, elev. 794 m. 22 August 2007, Dinh-Sac Pham leg. Paratypes: 5 females (Ar45248 to Ar45252), same data as holotype; 1 male and 7 females (Ar45253 to Ar45260), Vinh Phuc Province, Tam Dao National Park, 21°29.055′N, 105°37.420′E, elev. 1063 m. 11 December 2007, Dinh-Sac Pham leg.; 2 males and 2 females (Ar45261 to Ar45264), Vinh Phuc Province, Tam Dao National Park, 21°28.337′N, 105°38.094′E, elev. 1007 m. 12 March 2008, Dinh-Sac Pham leg.; 2 males (Ar45265 to Ar45266), Vinh Phuc Province, Tam Dao National Park, 21°30.516′N, 105°34.263′E, elev. 509 m. 11 April 2007, Dinh-Sac Pham leg.; 1 male and 1 female (Ar45267 to Ar45268), Vinh Phuc Province, Tam Dao National Park, 21°30.516′N, 105°34.263′E, elev. 509 m. 14 February 2008, Dinh-Sac Pham leg.; 1 male and 1 female (Ar45269 to Ar45270), Vinh Phuc Province, Tam Dao National Park, 21°30.516′N, 105°34.263′E, elev. 509 m. 13 November 2007, Dinh-Sac Pham leg.; 1 male and 3 females (Ar45271 to Ar45274), Vinh Phuc Province, Tam Dao National Park, 21°31.501′N, 105°33.434′E, elev. 1060 m. 11 December 2007, Dinh-Sac Pham leg.
Etymology. The specific name is an adjective from the Latin word ‘ serpentinus’, meaning ‘serpentiform’, referring to the shape of the embolus.
Diagnosis: Allotrochosina serpentina Wang & Li sp. nov. resembles A. huangi Wang, Li & Zhang, 2021 (Wang et al., 2021a: 17, figs 1A–B, 3–5) in having a thick and short median apophysis, membranous conductor, groove-like terminal apophysis, and relatively large, crescent-shaped fertilization ducts, but differs by the terminal apophysis with a triangular end (vs. hook-like in A. huangi), the thin and serpentiform embolus (vs. crescent-shaped in A. huangi), the pediform median apophysis (vs. liver-shaped in A. huangi) (Figs 1A–B, 2C–G), the C-shaped spermathecal stalks (vs. V-shaped in A. huangi), and the large spermathecal heads (vs. small in A. huangi) (Figs 1C–D, 2H–I).
Description. Male holotype (Fig. 2A) total length 3.68. Prosoma 2.19 long, 1.53 wide; opisthosoma 1.62 long, 1.11 wide. Carapace grey brown. Eye sizes and interdistances: AME 0.06, ALE 0.07, PME 0.28, PLE 0.20; AME– AME 0.08, AME–ALE 0.10, PME–PME 0.21, PME–PLE 0.19. Clypeus height 0.08. Chelicerae yellow brown, with three promarginal and two retromarginal teeth. Endites and labium yellow brown, longer than wide. Sternum yellow brown, with sparse brown setae. Legs yellow-brown. Leg measurements: I 5.83 (1.56, 1.90, 1.45, 0.92); II 5.29 (1.44, 1.74, 1.34, 0.77); III 5.05 (1.39, 1.59, 1.39, 0.68); IV 7.26 (1.84, 2.34, 2.06, 1.02). Leg formula: 4123. Opisthosoma oval. Dorsum yellow-brown, with black markings. Venter yellow-brown.
Palp (Figs 1A–B, 2C–G). Terminal apophysis wide, covered by median apophysis, distal part antidromous, with a sharp end. Median apophysis with a wide base, its anterior part pediform, slightly sclerotized. Embolus thin and serpentiform. Conductor wide, membranous, tapering distally.
Female paratype (Ar45248) (Fig. 2B) body features and colour as in the male. Total length 4.42. Prosoma 2.20 long, 1.58 wide; opisthosoma 1.96 long, 1.51 wide. Eye sizes and interdistances: AME 0.08, ALE 0.06, PME 0.26, PLE 0.21; AME–AME 0.06, AME–ALE 0.08, PME–PME 0.20, PME–PLE 0.20. Clypeus height 0.05. Leg measurements: I 6.31 (1.77, 2.20, 1.45, 0.89); II 5.61 (1.54, 1.92, 1.39, 0.76); III 5.09 (1.48, 1.59, 1.32, 0.70); IV 7.70 (2.05, 2.40, 2.29, 0.96). Leg formula: 4123.
Epigyne (Figs 1C–D, 2H–I). Spermathecal heads round. Spermathecal stalks C-shaped, wider than spermathecal heads, separated from each other by two times the length of a fertilization duct. Fertilization ducts relatively large, crescent-shaped.
Habitat preferences. All the specimens were collected by leaf-litter sieving, indicating this species mostly lives in leaf litter.
Distribution. Known only from the type locality, Tam Dao National Park, Vinh Phuc Province, Vietnam (Fig. 7).
description: Published as part of Wang, Lu-Yu, Li, Shuqiang & Pham, Dinh-Sac, 2024, The wolf spiders of three national parks in Northern Vietnam (Araneae: Lycosidae), pp. 234-244 in Zootaxa 5537 (2) on pages 236-238, DOI: 10.11646/zootaxa.5537.2.4, http://zenodo.org/record/14239502