Updated phylogeny of Eragenia Banks (Hymenoptera: Pompilidae), redescription of the male of E. aureicornis, and distribution of the genus in an Amazon-Cerrado transition zone

ABSTRACT This study revisits the molecular phylogeny of Eragenia by incorporating a specimen of E. aureicornis, the type species of the genus, as a new terminal. The new terminal is recovered as the sister species of E. setosa, with strong statistical support. The phylogeny sheds light on the evolution of morphological traits in the group, such as the male genital plate. A morphological redescription of the male of E. aureicornis is provided, including its first high-resolution images and a detailed description of the genitalia. We present an updated identification key for the male specimens of Eragenia. Eragenia micans is reported for the first time from the state of Maranhão, Brazil. Despite its continental dimensions and diverse biomes, Brazil harbors only 37.5% of the known Eragenia diversity.