Cheiracanthium murinum ( Thorell, 1895 )

Esyunin, Sergei L. & Zamani, Alireza, 2020, ‘ Conundrum of esoterica’: on the long-forgotten genus Eutittha Thorell, 1878, with new taxonomic considerations in Cheiracanthium C. L. Koch, 1839 (Araneae: Cheiracanthiidae), Journal of Natural History (J. Nat. Hist.) 54 (19 - 20), pp. 1293-1323 : 1307

Cheiracanthium murinum ( Thorell, 1895)

Eutittha murina Thorell, 1895, p. 50 (description of ♀ from MYANMAR: 70 miles north of

Eaugoon , Thayarwaddy; E . W . Oates leg. 1884–1887). Chiracanthium murina ( Sic !): Gravely 1931, p . 263, fig. 17A–B (♂ ♀). Cheiracanthium murina ( Sic !): Majumder & Tikader 1991, p . 72, figs 146–150 (♀). Cheiracanthium murinum: Sen et al. 2015, p. 73 , figs 404–408, pl. 18 (♀); Dhali et al.

2017, p. 51: figs 196–200, pl. 20 (♀; after Sen et al. 2015).

Comments

Cheiracanthium murinum was originally described from Bago Division of Myanmar (= Burma) ( Thorell 1895). After comparing females from India and Myanmar, Gravely (1931) attributed them to the same species. The male, which was collected separately from the females, was identified by Gravely as C. murinum for the ‘general appearance’ and ‘as there is no other species of female in the collection with which it could be associated’ ( Gravely 1931, p. 263). An additional argument about the correct assignment of this male to C. murinum is that this species belongs to the truncatum species group of Cheiracanthium (for information about this group see comments on C. truncatum ). Here we only note that this species is not conspecific to the type species of Eutittha because it has copulatory ducts not twisted around the spermathecae ( Majumder and Tikader 1991: fig. 148), different anterior and lateral margins of the epigyne ‘transversely oval depression over the front of which the anterior wall forms a projecting angle in the middle line. The antero-lateral walls on either side of this projection are conspicuously thickened and brownish in color’ (cf. Gravely 1931, p. 263, fig. 17B) and a dorsal tibial apophysis of the male palp (‘palp with two apophysis at apex of tibia’, cf. Gravely 1931, p. 262, fig. 17A). Cheiracanthium murinum is distributed in India and Myanmar ( World Spider Catalog 2020).