Subgenus Xanthosarus Robertson

Megachile subgenus Xanthosarus Robertson 1903: 168. Type species: Megachile latimanus . Monotypic and original designation.

Megachile subgenus Macromegachile Noskiewicz 1939­1948: 48 & 56. Type species:

Apis maritima W. Kirby 1802: 242 ­243 (not Kirby 1837 = M. (Delomegachile) frigida Smith 1853: 192 [U.S.A.]). Synonymy of Mitchell 1980: 23.

Megachile subgenus Phaenosarus Mitchell 1934: 303, 309. Type species: Megachile fortis Cresson. Original designation. Mitchell 1936: 139­140. Synonymy of Michener 2000: 567.

Megachiloides subgenus Phaenosarus Mitchell 1980: 40.

Megachile subgenus Addendella Mitchell 1980: 23. Type species: Megachile addenda Cresson, by original designation and monotypy. Synonymy of Michener 2000: 567.

Megachile subgenus Delomegachile Viereck 1916: 745. Type species: Megachile vidua Smith (= M. latimanus Say 1823). Monobasic. Mitchell 1935b: 175­176. Synonymy of Michener 2000: 567.