Anthidium cockerelli Schwarz 1928

Anthidium (Anthidium) cockerelli Schwarz

Anthidium cockerelli was first made known from a male captured at flowers of Cercidium near Oasis, California (Schwarz, 1928) and the female was subsequently reported from Encelia (Cockerell, 1938). It is a desert species, ranging from western Texas, through New Mexico and Arizona to southern Nevada, southern California, and Baja California Norte. Judging from the records published by Grigarick and Stange (1968) and material collected by Timberlake and by us, the females are polylectic, but have been taken at Larrea flowers in a number of localities. The flight period ranges from late March to early May in the low deserts to May and early June in the high deserts. In our sampling program we obtained, during the spring bloom of Larrea, a total of 54 specimens (20 males and 34 females) at various localities between Lordsburg, New Mexico, and Palm Springs, California (Tables 2, 5, 7, 9, 11, and 13).