Fauna and population of the spider and millipedes inhabiting lime stone denudations of Sylva river (Kungur district, Perm region)

The 41 spiders and 6 millipedes species are inhabited on lime stone denudations in Kungur District, Perm Region. Three spider species Cheiracanthium oncognathum Thorell, 1871, Ipa keyserlingi (Ausserer, 1867) and Zora silvestris Kulczynski, 1897 new to Middle Urals fauna. The spider population is unique on dominating species composition (Alopecosa accentuata (Latreille, 1817), Haplodrassus pseudosignifer Marusik, Hippa et Koponen, 1996, Xerolycosa miniata (C.L.Koch, 1834), Xerolycosa nemoralis (Westring, 1861)) and seasonal dynamics (absent spring peak of activity, autumn aspect is not expressed). The millipede population not considerably differs from those around one.