A revision of the Neotropical predaceous midges allied to Stilobezzia (Acanthohelea) edwardsi Ingram & Macfie (Diptera: Ceratopogonidae), with a phylogenetic analysis

Abstract

A revision of the Neotropical predaceous midges allied to Stilobezzia (Acanthohelea) edwardsi Ingram & Macfie from Argentinean and Chilean Patagonia is presented. Stilobezzia (Acanthohelea) edwardsi and Stilobezzia (Acanthohelea) furva Ingram & Macfie are redescribed and illustrated, and the distribution of both species is expanded. The male of S. (A.) furva is described for the first time, and four new species are described and illustrated. The Stilobezzia (Acanthohelea) edwardsi group is proposed to include these six species, a key to recognition of males and females is provided and a phylogenetic analysis of the New World species in the subgenus Acanthohelea is included.