其他摘要：The paper contains the data and new findings on the occurrence of pseudoscorpions (Arachnida, Pseudoscorpiones) in nests of ant Formica polyctena Förster, 1850 (Hymenoptera, Formicidae) in the valley of Mníchovský potok stream in the Stebnícka Magura massive (Northeastern Slovakia). Altogether 354 pseudoscorpions belonging to four species were found. Numerous representations of adults, as well as nymphal stages, of species Allochernes peregrinus Lohmander, 1939 and Pselaphochernes scorpioides (Hermann, 1804) point to their food and temperature preference in this microhabitat type. The species A. peregrinus has been recorded for the first time in ant nests worldwide.
