New genera and subgenera of augochlorine bees (Hymenoptera: Halictidae).

Abstract

Two new augochlorine genera, Chlerogelloides and Xenochlora, and three new subgenera, Megalopta (Noctoraptor), Megommation (Stilbochlora), and Megommation (Cleptommation), are described and figured. Three new combinations are made: Megommation minutum (Friese), Xenochlora nigrofemorata (Smith), and Xenochlora ianthina (Smith). Six new species are described: Chlerogelloides femoralis, Xenochlora ochrosterna, Xenochlora chalkeos, Megalopta (Noctoraptor) byroni, M. (N.) noctifurax, and Megommation (Stilbochlora) eickworti. Megalopta (Noctoraptor) and Megommation (Cleptommation) are parasitic, possibly on other species of Megalopta and Megommation, respectively, and together increase the number of origins of cleptoparasitism in the tribe Augochlorini to three. For each genus-group taxon, modified couplets are provided for Eickwort's key to the genera of Augochlorini.