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Osmia subfasciata Cresson, 1872


Scientific Name: Osmia subfasciata Cresson, 1872

Common Name: Osmia subfasciata


Osmia subfasciata Cresson, 1872: 261 [♀, ♂].

     Lectotype ♀, desginated by Cresson (1916: 131). USA, Texas, by Belfrage [ANSP no. 2541].

Osmia botitena Cockerell, 1909: 30 [♀]. Synonymy by Sandhouse (1939: 140).

     Neotype ♀, designated by M. Rightmyer, in Griswold and Rightmyer (2017: 21). USA, Texas, Lee Co., by Birkmann [USNM].

Osmia punctata Michener, 1936: 85 [♀]. Synonymy by Sandhouse (1939: 140); of Osmia subfasciata subfasciata Cresson by Hurd and Michener (1955: 215).

     Holotype ♀. USA, California, Coachella, 20 April 1934 [collector unknown] [CAS no 8764].


Taxonomic Notes: Michener (1936: 85) indicated that O. punctata Michener was closely related to O. subfasciata Cresson and O. botitena Cockerell, collectively forming a group for which he provided a key. He separated his species from O. subfasciata mainly based on the flagellum being entirely black, not brown beneath; both were separate from O. botitena by the greenish head and thorax with smaller punctures (Michener 1936: 85-86; and see Griswold and Rightmyer 2017: 24). All three species were synonymized under O. subfasciata Cresson by Sandhouse (1939: 140). Sandhouse (1939: 140) also included O. conjunctoides Robertson, 1893 and O. conjucta marilaunidii Cockerell, 1914 as synonymys of O. subfasciata, though the former was treated as a subspecies of O. subfasciata by Michener (1949: 265) and Hurd and Michener (1955), and a valid species by Rightymer et al. (2011: 270) and Giriswold and Rightmyer (2017: 7)]; the latter was recognized as a valid species, O. marilaunidii Cockerell by Griswold and Rightmyer (2017: 17).

Michener (1949: 261), who saw the holotype of O. botitena (i.e., Michener 1936), did not accept Sandhouse’s (1939) synonymy, and felt that it may represent the female associated with O. marilaunidii which if correct would be the valid name for that taxon. As Michener (1949: 261) indicated that the holotype of O. botitena is lost, the topotypic neotype selected by Rightmyer (in Griswold and Rightmyer 2017) supports the synonymy of Sandhouse (1939) and stabilizes the taxonomy (Griswold and Rightmyer 2017: 24).

DNA Barcode Index Number (BIN): BOLD:AAD5658

Biology: The nesting biology of this species was summarized by Linsley (1946), Mitchell (1962), Krombein (1967), Hurd (1979), Neff and Simpson (1992), and Cane et al. (2007). It nests in pre-existing cavities in wood, accepts trapnests, and will nest in empty snail shells (Neff and Simpson 1992). It is a polylectic species (Neff and Simpson 1992).

Distribution in Canada: Taylor 2014 [ON].

The presence of this species in Canada (Ontario) needs verification as Griswold and Rightmyer (2017) reported it much more common in the southwest USA, with only a few records in the eastern USA.


Cresson ET (1872) Hymenoptera Texana. Transactions of the American Entomological Society 4: 153-292.

Cockerell TDA (1909) Descriptions and records of bees.—XXI. Annals and Magazine of Natural History, Series 8 4(19): 25-31.

Hurd PD (1979) Superfamily Apoidea. In: Krombein KV, Hurd Jr PD, Smith DR, Burks BD (Eds) Catalog of Hymenoptera in America North of Mexico. Smithsonian Institution Press, Washington, 2735 pp.

Mitchell TB (1962) Bees of the Eastern United States. Volume 2. North Carolina Agricultural Experimental Station Technical Bulletin 152, Raleigh, 557 pp.

Cresson ET (1916) The Cresson types of Hymenoptera. Memoirs of the American Entomological Society 1: 1-141.

Hurd PD, Michener CD (1955) The megachiline bees of California. Bulletin of the California Insect Survey 3: 1-247.

Sandhouse GA (1939) The North American bees of the genus Osmia (Hymenoptera: Apoidea). Memoirs of the Entomological Society of Washington 1: 1-167.

Michener CD (1936) New Californian Osmiinae (Hymen., Megachilidae). Bulletin of the Southern California Academy of Sciences 35: 84-93.

Neff JL Simpson BB (1992) Nest biology of Osmia (Diceratosmia) subfasciata Cresson in Central Texas (Hymenoptera: Megachilidae). The Pan-Pacific Entomologist 68(1): 15-26.

Griswold T, Rightmyer MG (2017) A revision of the subgenus Osmia (Diceratosmia), with descriptions of four new species (Hymenoptera, Megachilidae). Zootaxa 4337(1): 1-37.

Michener CD (1949) A revision of the American species of Diceratosmia (Hymenoptera, Megachilidae). Annals of the Entomological Society of America 42, 258–264.

Cane JH, Griswold T, Parker FD (2007) Substrates and materials used for nesting by North American Osmia bees (Hymenoptera: Apiformes: Megachilidae). Annals of the Entomological Society of America 100: 350–358.[350:SAMUFN]2.0.CO;2

Krombein KV (1967b) Trap-nesting wasps and bees: life histories, nests, and associates. Smithsonian Press, Washington, D.C. vi + 570 pp.

Sociality: Solitary
Nesting: Cavity Renter
Pollen Specialization: Polylectic
Wintering Stage: Adult

Crop Preference: Not Available
Non Crop Preference: Not Available

Distribution: Ontario
Ecozone: Mixwood Plains