Marusik Y.M., Omelko M.M., Koponen S.
В журнале Zootaxa
Год: 2018 Том: 4433 Номер: 2
O. Pickard-Cambridge (1885) described Trachelas costata based on female specimens from two localities in the Himalayas. Since then it was only mentioned in two works by Simon (1897, 1906). The World Spider Catalog (2018) indicates its distribution as "China (Yarkand)". All of the species described by O. Pickard-Cambridge (1885), based on material collected during the Second Yarkand Mission, are stored in the Oxford University Museum of Natural History. Vials with material described in this paper contain no species and locality labels (Prószynski & Zochowska 1981; Marusik 1993). It was not difficult to recognize the syntypes of this species due to the figures given by O. Pickard- Cambridge, and also because it is the only trachelid described from Yarkand to date. The goals of our paper are to redescribe Trachelas costatus in detail, designate a lectotype, and comment on its distribution and relationships. Specimens were photographed with a Canon EOS 7D camera attached to an Olympus SZX16 stereomicroscope and Pro-Microscan camera attached to an Olympus BH-2 stereomicroscope. Digital images were montaged using CombineZP and Helicon Focus 3.10 image stacking software. Epigynes were cleared in a KOH/water solution until the soft tissues were dissolved. Standard abbreviations are used for leg segments: Fe—femur, Pa—patella, Ti—tibia, Mt— metatarsus, Ta—tarsus. Measurements are in mm. Measurements of the paralectotype from the same vial as the lectotype are given in brackets. We thank Zoë Simmons (Oxford, UK) and Dmitri V. Logunov (Manchester, UK) for their help in obtaining the types.
