Colletes ochraceus Swenk, 1906

Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula’s Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), Zootaxa 5522 (1), pp. 1-391 : 234

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 .