Colletes ochraceus Swenk 1906

Colletes ochraceus Swenk, 1906 [Holotype: UNSM; ♀ Southern California] This species occurs in California, USA and BC, Mexico. We reviewed a female collected in the Coastal Sage Matorral, 32 mi. S. Tijuana in July 1934 (BBSL) and one female collected in the Succulent Coastal Matorral in San Quintin in August 1938 (CASC). See fig. 156. Based on records from our collections, iNaturalist, and Discover Life, it appears that this species is a pollen specialist on fall-blooming Asteraceae such as Isocoma Nutt.