Halictus farinosus Smith 1853

Mont., Nebr., and N. Mex., west to B.C., Wash., Oreg., and Calif. (B.C., Ariz., Calif., Colo., Idaho, Mont., Nebraska, Nev., N. Mex., Oreg., Utah, Wash., and Wyo.).

This bee's nest architecture is described by Sakagami and Michener (1962) as Neocorynura farinosus: Nest architecture is Type IIIa: Lateral burrows branch off at approximately right angles from the main burrow with a cell at the end of each. Flat ground is the only or typical substrate used for nesting.

Halictus (Halictus) farinosus Smith

Halictus farinosus is one of the most abundant species of the genus in western North America, ranging from Nebraska, Montana, and British Columbia south to New Mexico and California. It is a highly polylectic species, gathering pollen from a wide range of plants in a broad spectrum of environments. Females are active in the spring, summer, and fall. They take pollen from Larrea primarily on the desert periphery.

Halictus farinosus is a species of ground-nesting sweat bee in the family Halictidae. The species is a primitively eusocial bee, of intermediate social strength when compared to other social species in the genus Halictus.