New data on introduced spider species (Arachnida: Aranei) from the Urals

Data on four introduced spider species from the Urals are provided. One species, Coleosoma floridanum (Banks, 1900), is found in the fauna of Russia for the first time, and three others, Oecobius navus (Blackwall, 1859), Ostearius melanopygius (O. Pickard-Cambridge, 1880) and Parasteatoda tabulata (Levi, 1980), are new to the Urals fauna. Thus, the synanthropic fauna of spiders of Perm currently consists of 20 species. Four of the five recorded introduced species, C. floridanum, O. melanopygius, P. tabulate, and Nesticella mogera (Yaginuma, 1972), were found in the greenhouse of the Botanical Garden of the Perm State University. The greenhouse spider fauna appears to be rather diverse: besides four introduced species, three synanthropic and 20 native spider species are found there. Data on ecology and/or phenology of the newly recorded introduced species are provided as well.