Andrena Fabricius, 1775 is one of the most diverse bee genera worldwide, yet the biology and distribution of many species are poorly known. Here I present the first record of Andrena pachucensis Donovan, 1977 in the United States. This species was originally described from 11 specimens collected in the state of Hidalgo Mexico. The type specimens are housed at University of Kansas where museum records indicate there are eight not 11 type specimens. The discovery of two additional specimens in Taos, New Mexico, represents a remarkable northward range extension of about 1,900 km.