Andrena (Callandrena) isocomae Timberlake 1951

Andrena (Callandrena s.l.) isocomae Timberlake, 1951 ** [Holotype: USNM (59273); ♀ Riverside, California, US; October 13, 1928] Andrena isocomae is a new species record in Mexico and BCP. This species flies later in the summer months and specializes on pollen from plants in the family Asteraceae including Gutierrezia Lag., Isocoma Nutt., and Heterotheca Cass. (LaBerge 1967). One female was collected in El Condor, a locality near the border with California in 1981 (SDNHM) and it has been recorded in recent surveys in San Diego County near the border (Hung et al. 2015). The BBPT collected 11 females in the Baja California Mountains (2021), Chaparral (2019), and the Central Desert (2020). All specimens were collected between August and November (MABC). See fig. 7.