Eucerini

Eucerini
Female Tetraloniella sp
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Superfamily:	Apoidea
Family:	Apidae
Subfamily:	Apinae
Tribe:	Eucerini
Genera
Over 30, see text

Over 30, see text

The Eucerini (often called long-horned bees) are the most diverse tribe in the family Apidae, with over 32 genera worldwide that were previously classified as members of the family Anthophoridae. All species are solitary, though many nest in large aggregations, and large "sleeping" aggregations of males are found occasionally. Most genera are distinctive in the unusually long male antennae from which the tribe derives its name (eucer- means true horned). They are most diverse in the Western Hemisphere.

The classification within the tribe is rather chaotic, as many of the genera are small and poorly characterized, with the bulk of species (about 500) in only five genera. This is a group in serious need of a thorough taxonomic overhaul, and the fusion of many genera would likely result (the most recent revision in 2000 eliminated seven genera).

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Wikipedia