Genus Helius Lepeletier & Serville, 1828

Megarhina Lepeletier & Serville, 1828 (in Latreille et al. 1828: 585). Type-species: Limnobia longirostris Meigen, 1818 (monotypic)

Leptorhina Stephens, 1829: 243. Type-species: Limnobia longirostris Meigen, 1818 (monotypic).

Rhamphidia Meigen, 1830: 281. Type-species: Limnobia longirostris Meigen, 1818 (designated in Macquart 1834).

Note.

As an unjustified new name for Megarhina, Helius was adopted for stability (Sabrosky 1999; Oosterbroek 2023).