''Helichus lithophilus'' is a species of long-toed water beetle in the family

Dryopidae Dryopidae is a family of beetles, commonly named long-toed water beetles, in the superfamily Byrrhoidea. It was described by Gustaf Johan Billberg in 1820. Description Long-toed water beetles are named for their extended claws. Adults have dens ...

. It is found in North America.

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Further reading