Sternolophus rufipes

imago
Sternolophus rufipes
Sternolophus rufipes

hime-gamushi inhabits stillwater in the whole of Japan here and there. A cover is must if we're going to keep them in aquarium tank as the tendeny to fly is very high. I think that they prefer to walk than swim underwater and seem not to care these own upside-down when walking.
They length 9-11mm.

larva
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Sternolophus rufipes
pupa
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Sternolophus rufipes