A new species of Luchoelmis Spangler & Staines (Coleoptera: Elmidae) from Argentina and its probable larva

Abstract

A new species of riffle beetle from southwestern Argentina, Luchoelmis kapenkemkensis, is described. Its diagnostic characters are illustrated and the key for the identification the species of the genus is updated. A larva, very likely belonging to this species, is also described and compared to other related larvae.