The bee genus Psaenythia in northern South America (Hymenoptera: Andrenidae)

Abstract

The diverse bee genus Psaenythia Gerstaecker (Panurginae: Protandrenini), hitherto known from central and southern South America, is recorded from northern South America for the first time. Two new species are described: Psaenythia diceratops, sp. n., from northeastern Colombia, and P. guaricoensis, sp. n., from central Venezuela. The males of P. diceratops are noteworthy for possessing prominent apicolateral clypeal horns, elongate scythe-like mandibles, and displaying macrocephaly with strong dimorphism.