Laminion debasrae ( Biswas & Biswas, 1992 ) Sankaran & Caleb & Sebastian, 2020

Sankaran, Pradeep M., Caleb, John T. D. & Sebastian, Pothalil A., 2020, A review of the Indian species formerly assigned to the genus Storena Walckenaer, 1805 (Araneae: Zodariidae) with the description of a new genus, European Journal of Taxonomy 707, pp. 1-23 : 11-13

Laminion debasrae ( Biswas & Biswas, 1992) gen. et comb. nov.

Figs 6 , 9

Storena debasrae Biswas & Biswas, 1992: 381 , figs 11–13.

Type material

Holotype

INDIA • ♀; West Bengal, North 24 Parganas, Palta , Santi Nagar ; 22°46′58.00″ N, 88°22′50.96″ E; 12 m a.s.l.; 25 Dec. 1986; Bijan Biswas leg.; NZC-ZSI, Kolkata (5411/18).

Supplementary description

Female (holotype (5411/18); Fig. 6A )

Colour in alcohol: carapace, eye region, clypeus, chelicerae, fangs, chilum, sternum, endites, labium, leg and palp segments dark reddish-brown; dorsal opisthosoma black, with paired medio-lateral and posterior creamy-white blotches; lateral opisthosoma pale black, with obliquely oriented posterior creamy-white stripes. Lateral eyes nearly contiguous. Cheliceral promargin with two denticles. Chilum unipartite, inverted triangular. Sternum posteriorly bluntly pointed, with coxal and intercoxal extensions. Body length 6.73. Carapace length 2.88, width 2.00. Opisthosoma length 3.85, width 2.69. Eye diameters: ALE 0.14. AME 0.16. PLE 0.14. PME 0.12. Eye interdistances: ALE–AME 0.21. AME–AME 0.08. AME–PME 0.13. PME–PLE 0.37. PME–PME 0.10. Chelicerae length 1.06. Clypeus height at ALEs 0.59, at AMEs 0.82. Measurements of palp and legs. Palp (right) 2.60 [0.84, 0.53, 0.54, 0.69], I (right) 7.06 [1.86, 0.94, 1.66, 1.31, 1.29], II ---, III 6.19 [1.75, 0.76, 1.23, 1.65, 0.80], IV 6.46 [1.90, 0.82, 1.32, 1.52, 0.90]. Leg formula: ----. Genitalia as in Fig. 6 B–C.

Male

Unknown.

Remarks

The ZSI collection has one glass tube for this species, which is labeled as “ holotype ” (no register number) containing one female specimen in fairly good condition, with broken legs and chelicerae and almost detached opisthosoma. The same tube has a small glass vial containing the dissected genitalia. The label mentions the year of collection as “1987”.

Figures

Fig. 6. Laminion debasrae (Biswas & Biswas, 1992) gen. et comb. nov., ♀, holotype of Storena debasrae Biswas & Biswas, 1992 (NZC-ZSI-5411/18). A. Female habitus, dorso-lateral view. B. Epigynum of the same, ventral view. C. Vulva of the same, dorsal view. D. Type label. E. Original illustrations of S. debasrae adapted from Biswas & Biswas (1992). Abbreviations: lSP = lateral sclerotised plate; mSP = median sclerotised plate. Scale bars: A = 2 mm; B–C = 0.2 mm.

Fig. 9. Currently known distributional records of Laminion gen. nov. Ǫ Laminion arakuensis (Patel & Reddy, 1989) gen. et comb. nov. ● Laminion birenifer (Gravely, 1921) gen. et comb. nov. ♦ Laminion debasrae (Biswas & Biswas, 1992) gen. et comb. nov. ■ Laminion gujaratensis (Tikader & Patel, 1975) gen. et comb. nov.