Chi này có các loài sau:

• Osmia adae Bingham, 1897
• Osmia aeruginosa Warncke, 1988
• Osmia agilis Morawitz, 1875
• Osmia alaiensis van der Zanden, 1994
• Osmia albiventris Cresson, 1864
• Osmia albolateralis Cockerell, 1906
• Osmia alfkenii Ducke, 1899
• Osmia aliciae Ayala & Griswold, 2005
• Osmia alpestris Rust & Bohart, 1986
• Osmia alticola Benoist, 1922
• Osmia amathusica Mavromoustakis, 1937
• Osmia anceps Pérez, 1895
• Osmia andrenoides Spinola, 1808
• Osmia angustipes Cockerell, 1933
• Osmia apicata Smith, 1853
• Osmia aquila Warncke, 1988
• Osmia argyropyga Pérez, 1879
• Osmia ariadne Peters, 1978
• Osmia ashmeadii (Titus, 1904)
• Osmia atriventris Cresson, 1864
• Osmia atroalba Morawitz, 1875
• Osmia atrocyanea Cockerell, 1897
• Osmia atrorufa Friese, 1913
• Osmia aurulenta (Panzer, 1799) (Gouden slakkenhuisbij)
• Osmia ausica Cockerell, 1944
• Osmia austromaritima Michener, 1936
• Osmia avedata Warncke, 1992
• Osmia avosetta Warncke, 1988
• Osmia azteca Cresson, 1878
• Osmia bakeri Sandhouse, 1924
• Osmia balearica Schmiedeknecht, 1885
• Osmia bella Cresson, 1878
• Osmia bicolor (Schrank, 1781) (Tweekleurige slakkenhuisbij)
• Osmia bicornis Linnaeus, 1758 (Rosse metselbij)
• Osmia bischoffi Atanassov, 1938
• Osmia botitena Cockerell, 1909
• Osmia breviata Warncke, 1988
• Osmia brevicornis (Fabricius, 1798)
• Osmia brevipes van der Zanden, 1994
• Osmia brevis Cresson, 1864
• Osmia bruneri Cockerell, 1897
• Osmia bucephala Cresson, 1864
• Osmia caerulescens (Linnaeus, 1758) (Blauwe metselbij)
• Osmia cahuilla Cooper, 1993
• Osmia calcarata White, 1952
• Osmia californica Cresson, 1864
• Osmia calla Cockerell, 1897
• Osmia capicola Friese, 1906
• Osmia cara Cockerell, 1910
• Osmia carinoclypearis Wu, 1985
• Osmia caulicola Cockerell, 1934
• Osmia cephalotes Morawitz, 1870
• Osmia cerasi Cockerell, 1897
• Osmia cerinthidis Morawitz, 1876
• Osmia chalybea Smith, 1853
• Osmia chinensis Morawitz, 1890
• Osmia chrysaetos Warncke, 1988
• Osmia chrysolepta Haeseler, 2005
• Osmia cinctella Dours, 1873
• Osmia cinerea Warncke, 1988
• Osmia cinnabarina Pérez, 1895
• Osmia claremontensis Michener, 1936
• Osmia clarescens Cockerell, 1911
• Osmia clypearis Morawitz, 1871
• Osmia cobaltina Cresson, 1878
• Osmia cockerelli Sandhouse, 1939
• Osmia collinsiae Robertson, 1905
• Osmia coloradensis Cresson, 1878
• Osmia concavoclypearis Wu, 1985
• Osmia conjuncta Cresson, 1864
• Osmia cordata Robertson, 1902
• Osmia corniculata (van der Zanden, 1989)
• Osmia cornifrons (Radoszkowski, 1887)
• Osmia cornuta (Latreille, 1805) (Gehoornde metselbij)
• Osmia crassa Rust & Bohart, 1986
• Osmia croceiventris Radoszkowski, 1882
• Osmia cyanella Cockerell, 1897
• Osmia cyaneonitens Cockerell, 1906
• Osmia cyanescens Morawitz, 1875
• Osmia cyanopoda Cockerell, 1916
• Osmia cyanoxantha Pérez, 1879
• Osmia cyrenaica Peters, 1978
• Osmia dakotensis Michener, 1937
• Osmia damascena Pérez, 1911
• Osmia decorata Morawitz, 1886
• Osmia densa Cresson, 1864
• Osmia derasa
• Osmia difficilis Morawitz, 1875
• Osmia dilaticornis Morawitz, 1875
• Osmia dimidiata Morawitz, 1870
• Osmia diomedia Warncke, 1988
• Osmia disjuncta Tkalcu, 1995
• Osmia distincta Cresson, 1864
• Osmia dives Mocsáry, 1877
• Osmia dlabolae Tkalcu, 1978
• Osmia dolerosa Sandhouse, 1939
• Osmia dusmeti van der Zanden, 1998
• Osmia ednae Cockerell, 1907
• Osmia emarginata Lepeletier, 1841
• Osmia enixa Sandhouse, 1924
• Osmia ephippiata Smith, 1879
• Osmia erythrogastra Ferton, 1905
• Osmia excavata Alfken, 1903
• Osmia exigua Cresson, 1878
• Osmia fasciata Latreille, 1811
• Osmia fedtschenkoi Morawitz, 1875
• Osmia felti Cockerell, 1911
• Osmia ferruginea Latreille, 1811
• Osmia fervida Smith, 1853
• Osmia flavipes Friese, 1909
• Osmia forticornis van der Zanden, 1989
• Osmia foxi Cameron, 1901
• Osmia francisconis White, 1952
• Osmia frieseana Ducke, 1899
• Osmia frunseensis Warncke, 1992
• Osmia gabrielis Cockerell, 1910
• Osmia gallarum Spinola, 1808
• Osmia gaudiosa Cockerell, 1907
• Osmia gemmea Pérez, 1896
• Osmia georgica Cresson, 1878
• Osmia giffardi Sandhouse, 1939
• Osmia giliarum Cockerell, 1906
• Osmia glareola Warncke, 1988
• Osmia glauca (Fowler, 1899)
• Osmia gracilicornis Pérez, 1895
• Osmia granulosa Cockerell, 1911
• Osmia grindeliae Cockerell, 1910
• Osmia grinnelli Cockerell, 1910
• Osmia gulmargensis Nurse, 1903
• Osmia gutturalis Warncke, 1988
• Osmia haemorrhoa Morawitz, 1886
• Osmia heliaca Warncke, 1988
• Osmia helicicola Robinaeau, 1836
• Osmia hellados van der Zanden, 1984
• Osmia hemera Sandhouse, 1939
• Osmia hendersoni Cockerell, 1907
• Osmia hermona Warncke, 1992
• Osmia hesperos Sandhouse, 1939
• Osmia heteracantha Pérez, 1896
• Osmia hurdi White, 1952
• Osmia hyperborea Tkalcu, 1983
• Osmia iberica van der Zanden, 1987
• Osmia illinoensis Robertson, 1897
• Osmia imitatrix (Tkalcu, 1992)
• Osmia indeprensa Sandhouse, 1939
• Osmia indigotea Morawitz, 1875
• Osmia inermis (Zetterstedt, 1838)
• Osmia inspergens Lovell & Cockerell, 1907
• Osmia integra Cresson, 1878
• Osmia interrupta Latreille, 1811
• Osmia inurbana Cresson, 1878
• Osmia iridis Cockerell & Titus, 1902
• Osmia ishikawai Hirashima, 1973
• Osmia jacoti Cockerell, 1929
• Osmia jason Benoist, 1929
• Osmia jilinensis Wu, 2004
• Osmia juxta Cresson, 1864
• Osmia karooensis Brauns, 1926
• Osmia kashmirensis Nurse, 1903
• Osmia kenoyeri Cockerell, 1915
• Osmia kincaidii Cockerell, 1897
• Osmia kirgisiana van der Zanden, 1994
• Osmia kohli Ducke, 1899
• Osmia labialis Pérez, 1879
• Osmia lacus Sandhouse, 1939
• Osmia laeta Sandhouse, 1924
• Osmia lanei Sandhouse, 1939
• Osmia laticauda Stanek, 1969
• Osmia laticella van der Zanden, 1986
• Osmia latisulcata Michener, 1936
• Osmia latreillei (Spinola, 1806)
• Osmia lazulina Benoist, 1928
• Osmia leaiana (Kirby, 1802) (Kauwende metselbij)
• Osmia lhotelleriei Pérez, 1887
• Osmia lignaria Say, 1837
• Osmia liogastra Cockerell, 1933
• Osmia livida Tkalcu, 1978
• Osmia lobata Friese, 1899
• Osmia longicornis Morawitz, 1875
• Osmia longula Cresson, 1864
• Osmia lunata Benoist, 1929
• Osmia lupinicola Cockerell, 1937
• Osmia madeirensis van der Zanden, 1991
• Osmia malina Cockerell, 1909
• Osmia maracandica Morawitz, 1894
• Osmia marginata Michener, 1936
• Osmia marginipennis Cresson, 1878
• Osmia maritima Friese, 1885 (Waddenmetselbij)
• Osmia maxillaris Morawitz, 1875
• Osmia mediana Engel, 2006
• Osmia mediorufa Cockerell, 1932
• Osmia melanocephala Morawitz, 1875
• Osmia melanogaster Spinola, 1808
• Osmia melanopleura Cockerell, 1916
• Osmia melanota Morawitz, 1888
• Osmia melanura Morawitz, 1872
• Osmia mertensiae Cockerell, 1907
• Osmia michiganensis Mitchell, 1962
• Osmia microdonta Cockerell, 1931
• Osmia microgramma Dours, 1873
• Osmia milenae Tkalcu, 1992
• Osmia mirhiji Mavromoustakis, 1957
• Osmia mixta Michener, 1936
• Osmia mongolica Morawitz, 1880
• Osmia montana Cresson, 1864
• Osmia moreensis van der Zanden, 1984
• Osmia morongana Cockerell, 1937
• Osmia mustelina Gerstäcker, 1869
• Osmia mutensis Peters, 1978
• Osmia namaquaensis Friese, 1913
• Osmia nana Morawitz, 1873
• Osmia nanula Cockerell, 1897
• Osmia nasoproducta Ferton, 1909
• Osmia nasuta Friese, 1899
• Osmia natalensis Cockerell, 1920
• Osmia nemoris Sandhouse, 1924
• Osmia neocyanopoda Rust & Bohart, 1986
• Osmia nifoata Cockerell, 1909
• Osmia nigricollis Warncke, 1992
• Osmia nigrifrons Cresson, 1878
• Osmia nigritula Friese, 1902
• Osmia nigriventris (Zetterstedt, 1838)
• Osmia nigrobarbata Cockerell, 1916
• Osmia nigrohirta Friese, 1899
• Osmia nigroscopula (Wu, 1982)
• Osmia niveata (Fabricius, 1804) (Zwartbronzen houtmetselbij)
• Osmia niveibarbis Pérez, 1902
• Osmia niveocincta Pérez, 1879
• Osmia notata (Fabricius, 1804)
• Osmia novaescotiae Cockerell, 1912
• Osmia nuda Friese, 1899
• Osmia obliqua White, 1952
• Osmia ocularis Warncke, 1988
• Osmia odontogaster Cockerell, 1897
• Osmia ogilviae Cockerell, 1932
• Osmia onocrotala Warncke, 1988
• Osmia opima Romankova, 1985
• Osmia oramara Warncke, 1992
• Osmia orientalis Benoist, 1929
• Osmia ornatula Cockerell, 1932
• Osmia pachyceps Friese, 1922
• Osmia pagosa Sandhouse, 1939
• Osmia palmae Tkalcu, 2001
• Osmia palmyrae van der Zanden, 1998
• Osmia pamirensis Gussakovsky, 1930
• Osmia paradisica Sandhouse, 1924
• Osmia parietina Curtis, 1828 (Boommetselbij)
• Osmia pedicornis Cockerell, 1919
• Osmia pennata Warncke, 1988
• Osmia pentstemonis Cockerell, 1906
• Osmia peregrina Warncke, 1988
• Osmia phenax Cockerell, 1897
• Osmia physariae Cockerell, 1907
• Osmia pieli Cockerell, 1931
• Osmia pikei Cockerell, 1907
• Osmia pilicornis Smith, 1846
• Osmia piliventris Friese, 1913
• Osmia pingreeana Michener, 1937
• Osmia polkruga Warncke, 1992
• Osmia potentillae Michener, 1936
• Osmia pratincola Warncke, 1988
• Osmia proxima Cresson, 1864
• Osmia prunorum Cockerell, 1897
• Osmia pulsatillae Cockerell, 1907
• Osmia pumila Cresson, 1864
• Osmia punica Pérez, 1896
• Osmia purpurata Ducke, 1899
• Osmia pusilla Cresson, 1864
• Osmia quadricornuta Wu, 2004
• Osmia quadridentata (Dumeril, 1860)
• Osmia ramona Warncke, 1992
• Osmia raritatis Michener, 1957
• Osmia rawlinsi Sandhouse, 1939
• Osmia recta Pérez, 1902
• Osmia reginae Cockerell, 1932
• Osmia regulina Cockerell, 1911
• Osmia relicta (Popov, 1954)
• Osmia rhodoensis (van der Zanden, 1983)
• Osmia rhodognatha Cockerell, 1932
• Osmia ribifloris Cockerell, 1900
• Osmia rostrata Sandhouse, 1924
• Osmia rufigastra Lepeletier, 1841
• Osmia rufina Cockerell, 1931
• Osmia rufinoides Wu, 2004
• Osmia rufohirta Latreille, 1811
• Osmia rufotibialis Friese, 1920
• Osmia rutila Erichson, 1835
• Osmia sanctaerosae Cockerell, 1910
• Osmia sandhouseae Mitchell, 1927
• Osmia sanrafaelae Parker, 1985
• Osmia satoi Yasumatsu & Hirashima, 1950
• Osmia saxatilis Warncke, 1988
• Osmia saxicola Ducke, 1899
• Osmia sculleni Sandhouse, 1939
• Osmia scutispina Gribodo, 1894
• Osmia sedula Sandhouse, 1924
• Osmia sequoiae Michener, 1936
• Osmia sexsignata Benoist, 1950
• Osmia shaanxiensis Wu, 2004
• Osmia signata Erichson, 1835
• Osmia simillima Smith, 1853
• Osmia simplex Morawitz, 1875
• Osmia sladeni Sandhouse, 1925
• Osmia sogdiana Morawitz, 1875
• Osmia solitaria Sandhouse, 1924
• Osmia sparsipuncta Alfken, 1914
• Osmia sponsa Nurse, 1904
• Osmia stangei Genaro, 2001
• Osmia steinmanni Müller, 2002
• Osmia subaustralis Cockerell, 1900
• Osmia subcornuta Morawitz, 1875
• Osmia subfasciata Cresson, 1872
• Osmia submicans Morawitz, 1870
• Osmia subtersa Cockerell, 1930
• Osmia svenssoni Tkalcu, 1983
• Osmia sybarita Smith, 1853
• Osmia tadjika Warncke, 1992
• Osmia tanneri Sandhouse, 1939
• Osmia tarsata Provancher, 1888
• Osmia taurus Smith, 1873
• Osmia tawildara Warncke, 1992
• Osmia tergestensis Ducke, 1897
• Osmia tersula Cockerell, 1912
• Osmia teunisseni van der Zanden, 1981
• Osmia texana Cresson, 1872
• Osmia thoracica Radoszkowski, 1874
• Osmia thysanisca Michener, 1957
• Osmia tingitana Benoist, 1969
• Osmia titusi Cockerell, 1905
• Osmia tokopahensis Michener, 1936
• Osmia torquata Warncke, 1988
• Osmia trevoris Cockerell, 1897
• Osmia tricornis Latreille, 1811
• Osmia tricuspidata Dours, 1873
• Osmia trifoliama Sandhouse, 1939
• Osmia tristella Cockerell, 1897
• Osmia tunensis (Fabricius, 1787)
• Osmia turneri Cockerell, 1937
• Osmia unca Michener, 1937
• Osmia uncicornis Pérez, 1895
• Osmia uncinata Gerstäcker, 1869 (Bosmetselbij)
• Osmia universitatis Cockerell, 1907
• Osmia vandykei Sandhouse, 1924
• Osmia versicolor Latreille, 1811
• Osmia virga Sandhouse, 1939
• Osmia viridana Morawitz, 1874
• Osmia watsoni Cockerell, 1911
• Osmia xanthomelana (Kirby, 1802) (Grote metselbij)
• Osmia yanbianensis Wu, 2004
• Osmia zarzisa Warncke, 1992
• Osmia zephyros Sandhouse, 1939

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