Account
What the sources say about this taxon, as written.
discussion · 
Plazi
Remark. Although the type of Arctosa vaginalis was not examined, it is clear from the description in Yu & Song (1988) that the specimen they described is the same as the female specimens we examined.
diagnosis · Plazi
Diagnosis. This species is similar to A. recurva Yu & Song, 1988 ( Yu & Song 1988 : 238, figs 14–18; Yin et al. 1997 : 99, figs 46a–e), but can be distinguished by the broad embolus and conductor, the relatively small terminal apophysis, the complex median apophysis of male palp ( Figs 8 A–B, 9E–F, 10A–B, 11A–E), the long stem of septum and the large seminal receptacle of epigyne ( Figs 8 C–D, 9G–H). Males of this species differ from all other lycosids by having ‘stridulatory files’ anterio-laterally on the chelicerae ( Fig. 9 D).
description · Plazi
Description. Male ( Figs 9 A, 9C–D). Total length 5.82. Carapace 3.19 long, 2.32 wide; Abdomen 2.49 long, 1.60 wide. Carapace yellowish brown, with light brown submarginal bands, eye region black. Fovea longitudinal. Cervical groove indistinct. Radial furrows distinct. Eye sizes and interdistances: AME 0.11, ALE 0.09, PME 0.26, PLE 0.22; AME–AME 0.10, AME–ALE 0.04, PME–PME 0.26, PME–PLE 0.23. Clypeus height 0.07. Chelicerae elongate, brown, with stridulatory files on retrolateral surface, two promarginal and three retromarginal teeth. Labium yellow brown, with dark base, longer than wide. Endites yellow brown, longer than wide. Sternum yellow and scutellate, with sparse brown hairs. Legs yellow brown, with black ring-like stripe. Leg measurements: I 7.55 (2.18, 2.67, 1.66, 1.04); II 6.70 (1.88, 2.27, 1.54, 1.01); III 6.20 (1.88, 1.81, 1.55, 0.96); IV 9.57 (2.51, 3.18, 2.67, 1.21). Leg formula: 4123. Abdomen oval. Dorsum brown, with lanceolate cardiac mark in anterior half, and with black marking. Venter yellowish brown, with small, yellowish brown, spinnerets. Male palp ( Figs 8 A–B, 9E–F, 10A–B, 11A–F). Subtegulum located in basal part of bulbus. Embolus relatively wide and flat, with pointed tip and distinct embolar ridge ( Er in Figs 11 A–B, D). Conductor wide and membranous. Median apophysis relatively small and narrow, with three arms ( Aa , Pa and Ra ). Retrolateral arm with anterior furrow ( Tf ). Terminal apophysis knife-like, thinner than embolus, with a deep furrow ( Fig. 11 D). Cymbium with two spines apically. Female ( Figs 9 B–C) total length: 6.05. Carapace 3.32 long, 2.37 wide; Abdomen 2.84 long, 1.89 wide. Eye sizes and interdistances: AME 0.14, ALE 0.11, PME 0.28, PLE 0.24; AME–AME 0.13, AME–ALE 0.05, PME–PME 0.26, PME–PLE 0.35. Clypeus height 0.10. Leg measurements: I 7.87 (2.24, 2.67, 1.77, 1.19); II 7.19 (2.11, 2.33, 1.59, 1.16); III 6.71 (1.89, 2.08, 1.64, 1.10); IV 10.68 (2.89, 3.59, 2.89, 1.31). Leg formula: 4123. Chelicerae without stridulatory files. Epigyne ( Figs 8 C–D, 9G–H). Septum nearly rounded, with a wide and long stem. Copulatory openings located beneath the margins of stem of septum. Copulatory ducts thick and long. Seminal receptacles large and club-like. Fertilization ducts crescent-shaped.