Although 21 species of Hydrophilidae are known to occur in Hawaii, nearly all are introduced, with only a handful being possibly native, and two being endemic. An additional five endemic species have been found in the mountains of Kauai and Oahu, and will be described shortly. All other remaining information on Hawaiian Hydrophilidae was distilled into a review by Michael Hansen in 1995 (download).
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|Above: The Awaawapuhi stream on NW Kauai.
Below: A new species of hydrophilid on Kauai
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