New data on spiders (Arachnida, Aranei) from the caves of Southwestern Siberia (Russia) Author Fomichev, Alexander A. Altai State University, 61 Lenina Prospect, Barnaul, 656049, Russia a.fomichov@mail.ru text Acta Biologica Sibirica 2020 2020-11-06 6 429 436 http://dx.doi.org/10.3897/abs.6.e59450 journal article http://dx.doi.org/10.3897/abs.6.e59450 2412-1908-6-429 F09DC28AA6DE48BEB8D721301AEE9264 18421FB538C35842802D17135B9050D9 Philodromus marusiki (Logunov, 1997) Material examined. 1♀ [3]. Distribution. This species has a Mongolian range ( Marusik et al. 2000 ). It was recorded in the Altai Krai, Altai, Tuva, Khakassia and Buryatia Republics of Russia ( Logunov 1997 ; Marusik et al. 2000 ; Azarkina and Trilikauskas 2013 ; Fomichev 2015 ), south to the Arkhangai Aimag of Mongolia ( Marusik and Logunov 1999 ). This species was reported from the vicinities of the Letuchikh Myshei Cave by Azarkina and Trilikauskas (2013) . The species inhabits rocky cliffs and probably is active mostly at night ( Marusik et al. 2000 ). The single female was collected in the entrance part of the cave.