Anthidiellum (Loyolanthidium) robertsoni (Cockerell, 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 : 280

Anthidiellum (Loyolanthidium) robertsoni (Cockerell, 1904)

[ Type: USNM; ♀ Rock Creek ?, California, USA]

This species is native to western North America , including throughout the entire BCP. ASUHIC, BBSL and SEMC report specimens collected in the Coastal Sage Matorral , Chaparral , Succulent Coastal Matorral , Vizcaíno Desert , Magdalena Plains , Gulf Coast , and Sarcocaulescent Shrubland ( GBIF 2023). The BBPT collected specimens in the Gulf Coast in March 2021 (1 ♂, 1 ♀); Coastal Sage Matorral (3 ♂), Chaparral (5 ♂), and the Baja California Mountains in Sierra San Pedro Mártir (2 ♂) in May 2022; and Central Desert in April 2023 (1 ♂). Voucher specimens are in MABC, and ECOAB. See fig. 194 .