Megachile (Chelostomoides) lobatifrons Cockerell, 1924

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 : 313

Megachile (Chelostomoides) lobatifrons Cockerell, 1924

[ Holotype: CASC; ♀ Puerto Refugio, Isla Ángel de la Guarda, Baja California, Mexico; June 29, 1921]

This species occurs in northern Mexico and the southwestern USA and specializes on pollen from several desert-dwelling Fabaceae including Olneya A. Gray , Parkinsonia L., Prosopis L., and Psorothamnus Rydb. ( Fowler 2020) . We examined one male collected in the Gulf Coast in Isla Ángel de la Guarda (SDNHM), which is the same island where the holotype female was collected ( Cockerell, 1924). The CARCIB team collected this species in the Central Desert (3 ♀), Vizcaíno Desert (1 ♀), Gulf Coast (1 ♀), and Magdalena Plains (3 ♀) between 2015 and 2019. Additionally, the BBPT collected specimens in the Lower Colorado Desert in May 2021 (1 ♀), and 2022 (1 ♀), and the Central Desert in October 2021 (1 ♀). Voucher specimens are in MABC, and ECOAB. See fig. 221.