Helophoridae - 27 Species, Identification & Facts

Helophorus aequalis

A very common water beetle, 4.5 to 6.3 mm length, it is all brown in colour with the zig-zag ridges on the thorax typical of the genus. Darker spots may be present on the elytra. It is most similar to H. grandis which is also one of the larger Heloph

Helophorus brevipalpis

A small 2.1 to 4.1 mm water beetle and the commonest over much of Britain. Generally pale mottled brown but appearance varies due to the extent of dark markings on the elytra. The pronotum is strongly metallic; purple, bronze or green, often in combi

Helophorus grandis

Length 5.3 to 7.7mm. As with other Helophorus the pronotum has characteristic zig-zag longitudinal grooves. It is pale brown to straw coloured with darker spots on the elytra. The large size means it could only be confused with larger specimens of He

Helophorus ledatus

Identification: Study of male genitalia is usually needed for positive identification .

Helophorus linearis

Type Locality: Fort Laramie, Wyoming [not Nebraska]

Helophorus lineatus

Identification: Distinguished, in part, from other Helophorus by the short apical maxillary palpi and the distinctly indented lateral pronotal groove.