mucorosa Cockerell, new comb.

Megachile mucorosa Cockerell 1908b: 265 ­266. Male. Type locality: Boulder, Colorado [U.S.A.].

Megachile (Argyropile) nebraskana Mitchell 1934: 347 ­348. Female. Type locality: War Bonnet Canyon, Sioux County, Nebraska [U.S.A.]. Synonymy of Hurd 1979: 2064.