A new species of Andrena (Trachandrena) from the Southwestern United States (Hymenoptera, Andrenidae)

Abstract

A new species of Andrena Fabricius, 1775, subgenus Trachandrena Robertson, 1902 is described and illusÂtrated, A. hadfieldi sp. nov., from Arizona, United States. The new species, presently known only from the female holotype, was collected in a Malaise trap in 1994, and remained unstudied until recently. In addition, Trachandrena is compared to similar subgenera in North America to assist in recognizing new members.