Megachilidae Schenk, 1860
Atoposmia abjecta (Cresson, 1878)
Atoposmia anodontura (Cockerell, 1917)
Atoposmia anthodyta (Michener, 1943)
Atoposmia arizonensis (Michener, 1954)
Atoposmia beameri (Michener, 1951)
Atoposmia copelandica (Cockerell, 1908)
Atoposmia daleae (Michener, 1951)
Atoposmia elongata (Michener, 1936)
Atoposmia enceliae (Cockerell, 1935)
Atoposmia hebitis (Michener, 1954)
Atoposmia hemizoniae (Cockerell, 1935)
Atoposmia hypostomalis (Michener, 1949)
Atoposmia maryae (Michener, 1949)
Atoposmia mirifica (Michener, 1954)
Atoposmia namatophila (Michener, 1954)
Atoposmia nitidivitta (Michener, 1943)
Atoposmia oregona (Michener, 1943)
Atoposmia panamintensis (Michener, 1943)
Atoposmia phaceliarum (Cockerell, 1935)
Atoposmia pycnognatha (Michener, 1943)
Atoposmia robustula (Cockerell, 1935)
Atoposmia rupestris (Cockerell, 1935)
Atoposmia segregata (Michener, 1954)
Atoposmia tequila (Peters, 1972)
Atoposmia timberlakei (Cockerell, 1935)
Atoposmia triodonta (Cockerell, 1935)
Atoposmia viguierae (Cockerell, 1935)