Helichus
Encyclopedia
Beetle
Beetle
Coleoptera is an order of insects commonly called beetles. The word "coleoptera" is from the Greek , koleos, "sheath"; and , pteron, "wing", thus "sheathed wing". Coleoptera contains more species than any other order, constituting almost 25% of all known life-forms...

s of the genus Helichus are found worldwide apart from in Australia and Antarctica. Adults reach 1–8 mm (0.0393700787401575–0.31496062992126 ) long and live in aquatic or riparian environments. The larvae are land-dwelling which may be unique in water living insects.
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