Zur taxonomischen Unterscheidung männlicher Mordellistena weisei Schilsky und Mordellistena bicoloripilosa Ermisch (Coleoptera, Mordellidae).

Abstract

Mordellistena weisei Schilsky and M. bicoloripilosa Ermisch (Col., Mordellidae), stemmining mordellid beetles in Artemisia vulgaris (Asteraceae), have frequently been confused in faunistic studies and not always differentiated in biocoenological investigations. In order to help distinguish the males of the two species, the parameres and the coloration of the head and the profemora are described. An analysis of these features shows that the two species can be distinguished by the shape of their parameres, but not by their coloration. Paramere size did not depend on body size in either species.

Keywords

Mordellistena weisei, Mordellistena bicoloripilosa, Mordellidae, taxonomy, genital structure, parameres, coloration, variability, Artemisia vulgaris, stem miners.