gemula Cresson, new comb.
Megachile gemula Cresson 1878: 118 . Male (not female). Type locality: Georgia [U.S.A.].
Megachile carbonaria Cresson 1879: 208 . Female. Type locality: Nevada [U.S. A]. (Not M. carbonaria Smith 1853: 179 [Northern India]. Synonymy of Friese 1911: 236.
Megachile Vancouverensis Provancher 1888: 424 . Male. Type locality: Vancouver [Canada]. Synonymy of Mitchell 1962: 135.
Megachile avara Cresson 1878: 123 . Male. Type locality: Georgia [U.S.A.]. Synonymy of Mitchell 1935b: 181.
Megachile cressonii Dalla Torre 1896: 427 . New name for Megachile carbonaria Cresson.
Megachile albula Lovell and Cockerell 1907: 18 19. Male. Type locality: Southern Maine [U.S.A.]. Synonymy of Mitchell 1962: 135.
Megachile gemula albula Cockerell 1913a: 531 . New status.
Megachile vancouverensis Cockerell 1913a: 531 . Emendation.
Megachile vandykei Cockerell 1925a: 205 . Female. Synonymy of Hurd 1979: 2059.
Megachile (Delomegachile) gemula Mitchell 1935b: 181 185.
Megachile (Delomegachile) gemula var. cressonii Mitchell 1935b: 185 .
Megachile gemula var. fulvogemula Mitchell 1935b: 185 186. Female. Type locality: Cloudcroft, New Mexico [U.S.A.]. Synonymy of Hurd 1979: 2060.
Megachile avaria Hurd 1979: 2060 (Misspelling) .
Megachile (Delomegachile) gemula cressonii Hurd 1979: 2059 .
Megachile (Delomegachile) gemula gemula Hurd 1979: 2060 .