subnigra Cresson, new comb.

Megachile subnigra Cresson 1879: 208 . Female. Type locality: Nevada [U.S.A.].

Megachile (Xeromegachile) subnigra Mitchell 1937a: 364 ­366.

Megachile (Xeromegachile) angelica Mitchell 1934: 318 ­319. Male. Type locality: Los Angeles County, California [U.S. A.].

Megachile (Xeromegachile) subnigra var. angelica Mitchell 1944: 138 ­139.

Megachile (Xeromegachile) subnigra angelica Hurd 1979: 2065 .

Megachile (Xeromegachile) blaisdelli Mitchell 1934: 336 ­337. Female. Type locality: Coronado, California [U.S.A.]. Synonymy of Hurd 1979: 2065.

Megachile (Xeromegachile) moschata Mitchell 1934: 338 ­39. Female. Type locality: Riverside, California [U.S.A.]. Synonymy of Hurd 1979: 2065.

Megachile (Xeromegachile) subnigra subnigra Hurd 1979: 2065 .