Byrrhoidea
Encyclopedia
The superfamily Byrrhoidea includes a number of 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...

 families, most of which are either aquatic or associated with a semi-aquatic habitat. In fact, other than the superfamily Hydrophiloidea
Hydrophiloidea
Hydrophiloidea is a superfamily of beetles. Until recently it only included a single family, the water scavenger beetles , but several of the subfamilies have been removed and raised to family rank.-External links:*...

, the majority of the remaining Polyphaga
Polyphaga
Polyphaga is the largest and most diverse suborder of beetles; the name is derived from two two Greek words: poly-, meaning 'many', and phagein, meaning 'to eat', so the suborder is called the “eaters of many things”...

n beetles which are aquatic are in this superfamily. These families were traditionally grouped as a separate superfamily, the Dryopoidea, which is no longer recognized. The vast majority of species are small (<1 cm), and predominantly dull brown or black.
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