Andrena (Micrandrena) piperi Viereck, 1904

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 : 58

Andrena (Micrandrena) piperi Viereck, 1904

[ Holotype: UNSM; ♀ Pullman , Washington, US]

This species has a broad distribution across the southwestern USA and northern BC. This species has a strong preference for pollen from plants in the family Brassicaceae Ribble (1967) . Within the BCP, its presence was first documented in BC’s Succulent Coastal Matorral ( Ribble, 1968). We reviewed one female collected in April 1963 in the Chaparral region south of Tecate and confirmed a female reported by Ribble (1968) from the Succulent Coastal Matorral in April 1963 (CASC). Additionally, the BBPT collected 12 females in the Coastal Sage Matorral in March (1) and April (11) of 2021. Voucher specimens are in BBSL, ECOAB, and MABC. See fig. 15.