agustini Cockerell, new comb.

Megachile agustini Cockerell 1905a: 82 ­83. Male. Type locality: Pecos, New Mexico [U.S.A.]. Type repository: AMNH. Examined.

Megachile (Phaenosarus) agustini Mitchell 1936: 141 ­143.

Megachile (Phaenosarus) subfortis Mitchell 1936: 145 ­147. Male. Type locality: Douglas, Arizona [U.S.A.]. Synonymy of Hurd 1979: 2061.