Abstract: | More than 2000 gray rat specimens and 5 burrows have been examined in several regions of steppe and forest-steppe zones of Ukraine. 24,647 representatives of Arthropoda of 39 taxonomic groups have been collected. Species composition of parasitic mites (Gamasida, Trombiculidae, Myobiidae, Listophoridae) and insects (Anoplura, Siphonaptera) has been defined. |