Eucerini
The Eucerini 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. They are most diverse in the Western Hemisphere.
Classification
The classification within the tribe is rather chaotic, as many of the genera are small and poorly characterized, with the bulk of species 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.
Genera
Agapanthinus LaBerge, 1957 Alloscirtetica Holmberg, 1909 Canephorula Jörgensen, 1909 Cemolobus Robertson, 1902 Cubitalia Friese, 1911 Epimelissodes Ashmead, 1899 Eucera Scopoli, 1770 [Image: Eucera nigrescens MHNT.jpg|thumb|upright 1.0|Eucera nigrescens]Eucerinoda Michener & Moure, 1957 Florilegus Robertson, 1900 Gaesischia Michener, LaBerge & Moure, 1955 Gaesochira Moure & Michener, 1955 Hamatothrix Urban, 1989 Lophothygater Moure & Michener, 1955 Martinapis Cockerell, 1929 Melissodes Latreille, 1829 Melissoptila Holmberg, 1884 Micronychapis Moure & Michener, 1955 Mirnapis Urban, 1998Notolonia Popov, 1962 Pachysvastra Moure & Michener, 1955 Peponapis Robertson, 1902 Platysvastra Moure, 1967 Santiago Urban, 1989 Simanthedon Zavortink, 1975 Svastra Holmberg, 1884 Svastrides Michener, LaBerge & Moure, 1955 Svastrina Moure & Michener, 1955 Syntrichalonia LaBerge, 1957 Tetralonia Spinola, 1839 Tetraloniella Ashmead, 1899 Thygater Holmberg, 1884 Trichocerapis Cockerell, 1904 Ulugombakia Baker, 2003Xenoglossa Smith, 1854