Diadasia (Coquillettapis) australis

Diadasia (Coquillettapis) australis (Cresson, 1878) [Syntypes: ♀ ♂, Riding, Morrison, Colorado; Belfrage, Texas, USA] This species is widely distributed in both Mexico and the USA, which is supported by historic and recent surveys. This species is within the australis complex along with D. rinconis and opuntiae and all are pollen specialists on flowers in the family Cactaceae (Sipes and Tepedino 2005). UCRC reports one specimen collected in May 1949 in the Central Desert and we reviewed one specimen collected in the Gulf Coast in La Paz in June 1921 (CASC). The CARCIB team collected two females in the Sarcocaulescent Shrubland in April 2018, and two females and one male in the Gulf Coast in November 2016, and March and May 2016. Additionally, the BBPT collected 13 males in May 2021 and 2022 in the Baja California Mountains and Central Desert (7 ♂ MABC; 6 ♂ ECOAB). See fig. 93.