On the systematic of the water mite Feltria ishikariensis Imamura (Acari, Hydrachnidia, Feltriidae)
First illustrated description of male and redescription of female of the water mite Feltria ishikariensis Imamura, 1954 from running waters of Primorye Territory of Russia is given. Dorsum of male with large shield and two narrow posterior platelets. Dorsal shield bearing four pairs of setae, posterior plates with one glandularia each. Coxal plates in four groups. The genital field with deep posteromedian indentation, 40-50 pairs of acetabula and four pairs fine medial setae. III-Leg-6 with short ventrodistal projection bearing four to five slender setae. Excretory pore in posteroventral position.