Helichus

Erichson, 1847

Species Guides

Helichus basalis(Long-toed water beetle)
Helichus fastigiatus
Helichus lithophilus(Contrasted Dryopid)
Helichus striatus(long-toed water beetle)
Helichus suturalis(long-toed water beetle)
Helichus triangularis

Helichus is a of small beetles in the Dryopidae, found worldwide except Australia and Antarctica. measure 1–8 mm and inhabit aquatic or riparian environments. The genus is notable for having terrestrial larvae despite the aquatic lifestyle of adults, a trait that may be unique among water-associated insects.

Helichus triangularis by (c) Matthew Pintar, some rights reserved (CC BY), uploaded by Matthew Pintar. Used under a CC-BY license.

Helichus suturalis by (c) Matthew Pintar, some rights reserved (CC BY), uploaded by Matthew Pintar. Used under a CC-BY license.

Pronunciation

How to pronounce Helichus: /ˈhɛlɪkʊs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Habitat

Aquatic and riparian environments for . Larvae inhabit terrestrial .

Distribution

Worldwide distribution excluding Australia and Antarctica. Documented occurrence records include Colombia (Antioquia), Norway, and Vermont (United States).

Life Cycle

Larvae are terrestrial while are aquatic or semi-aquatic, representing an unusual shift between life stages.