Dianthidium (Dianthidium) ulkei (Creson, 1878)

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 : 294

Dianthidium (Dianthidium) ulkei (Creson, 1878)

[ Type: ANSP; ♀ Utah, USA]

This species occurs from southwestern Canada to northwestern Mexico ( Grigarick & Stange 1968; Ayala et al. 1996). This species specializes on pollen from a broad range of plant genera in the family Asteraceae ( Fowler 2020) . Within the BCP, it has been reported in the Gulf Coast and Sarcocaulescent Shrubland with preserved specimens in ASUHIC and BBSL ( GBIF 2023). We reviewed one male collected in the Baja California Mountains in September 1981 (BBSL). The BBPT collected specimens in the Coastal Sage Matorral in June (3 ♂) and September 2020 (1 ♂); Chaparral in May 2022 (1 ♂); and Baja California Mountains in September 2021 (1 ♂), and May 2022 (2 ♀). Voucher specimens are in MABC, and ECOAB. See fig. 205.