Coillina yogeshi ( Gajbe, 1993 ) Sankaran & Caleb & Sebastian, 2021

Sankaran, Pradeep M., Caleb, John T. D. & Sebastian, Pothalil A., 2021, On the taxonomic validity of Indian ground spiders: IV. Genera Apodrassodes Vellard, 1924, Herpyllus Hentz, 1832 and Sergiolus Simon, 1892 (Araneae: Gnaphosidae), Journal of Natural History 54 (43 - 44), pp. 2839-2857 : 2840-2843

Coillina yogeshi ( Gajbe, 1993) comb. nov. ( Figures 1–2 )

Apodrassodes yogeshi Gajbe, 1993: 227 , figs 1–4 (♂).

Coillina baka Yin & Peng, 1998: 266 , figs 17–25 (♂). Song et al. 2004: 44, fig. 22A–B (♂). New synonymy

Type material

Holotype male of A. yogeshi from INDIA: Tripura: Telianural village (?Teliamura), V. C. Agrawal leg., 28 January 1971, repository NZC-ZSI, Kolkata (no register number), examined.

Holotype and 1 paratype males of C. baka from CHINA: Baka: Menglun County (20°30ʹN, 100°30ʹE, 1020 m alt), Yunnan Province, Yan Hengmei leg., 24 November 1997, repository Department of Biology, Hunan Normal University (no register number), not examined. The original illustrations in Yin and Peng (1998, figs 22–25) are diagnostic and were used for comparison.

Justification of the transfer and synonymy

Detailed examination of the holotype of A. yogeshi suggests that this species has all of the diagnostic features of C. baka : shape of eye group, cheliceral promargin with three teeth and two denticles, retromargin with three teeth, median promarginal tooth largest, pedipalp femur with a thumb-like disto-ventral apophysis, short, flat retrolateral tibial apophysis and enormously long embolus with characteristic twists (compare Figure 1 (b–c), 2(a–d) with Yin and Peng 1998, figs 20, 22–25; Song et al. 2004, fig. 22A–B). All these indicate that A. yogeshi should belong to Coillina Yin & Peng, 1998 . Since the name A. yogeshi is published before C. baka , the former has priority over the latter name ( ICZN 1999: Article 23.1). Thus, C. baka should be considered as a junior synonym of C. yogeshi comb. nov.

Supplementary description

Male ( Figure 1 (a–c), 2(a–d)). Fovea reddish. Second promarginal tooth largest ( Figure 1 (c)). Opisthosoma oval; dorsum with an antero-median, longitudinal marking. Trochanters without notches. Metatarsus III with distal preening brush. Tarsi II and III well scopulated. Body length 8.37. Prosoma length 4.10, width 3.11. Opisthosoma length 4.27, width 2.97. Eye sizes and interdistances: ALE 0.19. AME 0.21. PLE 0.18. PME 0.15; AME–ALE 0.03. AME– AME 0.09. AME–PME 0.16. PME–PLE 0.17. PME–PME 0.09. Clypeus height at ALEs 0.22, at AMEs 0.20. Length of chelicerae 1.38. Measurements of pedipalp and legs (only II and III): Pedipalp 3.85 [1.33, 0.57, 0.30, 1.65], I –, II 9.86 [2.75, 1.73, 2.23, 1.97, 1.18], III 8.71 [2.56, 1.47, 1.79, 1.96, 0.93], IV –. Pedipalp ( Figure 2 (a–d)): femur disto-ventrally with a thumb-like apophysis, disto-retrolaterally with a short conical process ( Figure 2 (c–d)). Retrolateral tibial apophysis short, flat, apically pointed ( Figure 2 (c)). Tegulum short, globular, lacking conductor and median and terminal apophyses. Embolus enormously long with smoothly rounded tip, medio-retrolaterally arising, proximal 2/3rd broad, flat, the rest filiform, sharply twisted thrice covering the entire tegulum ( Figure 2 (a–d)).

Female. Unknown.

Remarks

The ZSI collection has one glass bottle for A. yogeshi labelled as ‘holotype’ (no register number specified) containing one male specimen without right legs I–IV and left legs I and IV; otherwise, it is in good condition. The same bottle has a small glass vial containing the dissected left pedipalp.

Figures

Figure 1. Coillina yogeshi comb. nov., male holotype of Apodrassodes yogeshi. (a) habitus, dorsal view. (b) eyes, dorsal view. (c) chelicerae, ventral view. (d) label from type bottle. Scale bars a = 2 mm; b–c = 0.5 mm.

Figure 2. Coillina yogeshi comb. nov., left pedipalp of the male holotype of Apodrassodes yogeshi. (a) prolateral view. (b) ventral view. (c) retrolateral view. (d) dorsal view. Scale bars a–d = 1 mm.