Four new water mite species of the genus Atractides Koch (Acari: Hydrachnidia: Hygrobatidae) from Russia

摘要

Four new water mite species in the genus Atractides are described: A. yaroslavlensis sp. n. (male, female and larva) and A. ildicus sp. n. (female) from streams in the Yaroslavl Province, and^. komarovkaensis (female) and A. primory ens is (female) from the Primory Territory of Russia are presented. The fauna of water mites of RussiaHncludes about 30 species of the genus Atractides Koch, 1837 (Sokolow 1940; Tuzovskij 1977, 2004, 2005, 2006, 2010a, 2010b). The majority of species of this genus is known from the European part of Russia and only several species are recorded from the Asian part of the country. The fauna of water mites of Russia still remains insufficiently investigated. Investigations of the water mite fauna in different regions of Russia have yielded four new species of this genus, described below.