The leafhopper genus Rhopalopyx in the Netherlands (Hemiptera: Auchenorrhyncha: Cicadellidae)

A revision of the Dutch material of the leafhopper genus Rhopalopyx yielded some surprising results, leading to a new checklist for this genus. A few specimens resembling R. brachyanus were found within populations of R. elongata. However, it is concluded that these males were parasitized by Pipunculidae, which led to deformation of their genitalia. Rhopalopyx brachyanus is described from Hungary on the basis of five males found in a large population of R. vitripennis. Based on this similarity, it is assumed that the R. brachyanus material concerned parasitized males. Consequently, R. brachyanus is considered to be a synonym of R. vitripennis.