Tuzovsky P.V. 2010. Description of a new water mite species of the genus Halacarellus K. Viets (Acari: Halacaridae) from Kamchatka // Acarina. Vol.18. No.1: 67–72 [in English].

Institute for Biology of Inland waters, Russian Academy of Sciences, Borok, Yaroslavl Prov., 152742 Russia; e-mail: tuz@ibiw.yaroslavl.ru

ABSTRACT: A new water mite species, Halacarellus kamchatkaensis sp.n. (Acari: Halacaridae), collected in the freshwater lake Kuril’skoe in Kamchatka is described. This species is characterized by the following features: in both sexes, the anterodorsal plate with straight anterior margin and anterolateral notches, the ocular plates are wide and without eye lenses, the posterodorsal plate is pear-shaped; the genital valves with three acetabula each; in males, the genital acetabula are external, the genital plate with 23–27 perigenital setae on each side; in females, the genital acetabula are internal, the genital plate with one seta on each side.

KEY WORDS: Halacaridae, Halacarellus kamchatkaensis, new species, male, female, freshwater lake, Kamchatka, Russia.

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