Eutittha excavata ( Rainbow, 1920 ) Esyunin & Zamani, 2020

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 : 1300-1301

Eutittha excavata ( Rainbow, 1920) , comb. nov.

Cheiracanthium excavatum Rainbow,1920,p. 256 ,pl. 30,figs 75–78 (description of holotype

♀ from AUSTRALIA: Norfolk Islands (29°20’S, 167°57 ʹ E); A .M . Lea leg. XII .1915 – I.1916).

Comments

This species is known only from the female holotype collected in Norfolk Island ( Rainbow 1920). Rainbow gave a very schematic drawing and an equally basic description of the female epigyne: ‘Epigynum a simple tongue-like plaque’ ( Rainbow 1920, p. 256). According to this description, we infer that this specimen is an immature female, since mature females of Cheiracanthium and Eutittha always have a more or less pronounced atrium, and not a ‘plaque’. We make a conservative assumption that this species may belong to the mordax species group according to the general longitudinal form of the epigyne. From the species that inhabit the neighbouring islands ( E. mordax and E. stratiotica ), E. excavata can be distinguished by the yellow colouring of the body and legs.