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Webster 1913 Edition
Water mite
Wa′ter miteˊ
.(Zool.)
Any of numerous species of aquatic mites belonging to
Hydrachna
and allied genera of the family Hydrachnidae
, usually having the legs fringed and adapted for swimming. They are often red or red and black in color, and while young are parasites of fresh-water insects and mussels. Called also water tick
, and water spider
.