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Melecta pacifica fulvida Cresson, 1879


Scientific Name: Melecta pacifica fulvida Cresson, 1879

Common Name: Melecta pacifica fulvida


Melecta pacifica var. fulvida Cresson, 1879a: 204 [♀]. Synonymy of M. pacifica Cresson by Hurd and Linsley (1951: 128, as a valid subspecies).

     Lectotype [designated by Cresson 1916: 119]. USA, Nevada, by Morrison [ANSP no. 2289].

Bombomelecta semifulva Cockerell, 1921: 212 [♂]. Synonymy of Melecta pacifica fulvida Cresson by Hurd (1979: 2070).

     Holotype . USA, Colorado, Boulder, 17 May 1920, by E.R. Becker [CAS no. 4673].


Taxonomic Notes: Though Linsley (1938: 160; 1939a: 440) followed Cresson (1879a: 204) in considering M. fulvida subspecific with M. pacifica, Viereck (1903b: 181), Michener (1948: 17) and later Linsley (1951e: 1242) treated it (and M. atlantica Linsley) as a valid species; Viereck (1903b) incorrectly indicated that the species was originally described as M. thoracica var. fulvida Cresson (presumably following the classification of Dalla Torre (1896: 318) who considered it a subspecies of M. thoracica Cresson), though he too considered that it was likely a variety of M. pacifica. In a subsequent treatment of Californian species, Hurd and Linsley (1951: 128) reinstated it as a subspecies of M. separata which has been followed by subsequent authors (Krombein 1958: 258; Hurd 1979: 2070) until the present.

Linsley (1939a: 441, 1951: 1242) treated M. semifulva (Cockerell), known from the type specimen, as a valid species though indicated it was similar to M. pacifica. This opinion was shared by Hurd and Linsley (1951: 127) who also examined the type material but did not difinativily place it into synonymy. Though it was not associated with any subspecies of M. pacifica recognized by Krombein (1958: 258), it was later treated as a synonym of M. pacifica fulvida by Hurd (1979: 2070).

DNA Barcode Index Number (BIN): BOLD:AAD8008

No differences in COI have been observed yet among the recognized subspecies.

Distribution in Canada: Viereck et al. 1905a [BC, and as M. fulvida Cresson, AB]; Criddle et al. 1924 [BC]; Linsley 1938 [BC, AB], 1939 [BC, as M. pacifica fulvida Cresson]; Michener 1948 [BC]; Sheffield and Heron 2019 [BC].

Extent of Occurrence (EOO) in Canada ( 103,719 km2

Index of Area of Occupancy (IAO) in Canada ( 112 km2



Cresson ET (1879) Descriptions of new North American Hymenoptera in the collection of the American Entomological Society. Transactions of the American Entomological Society 7: 201-214.

Dalla Torre CG (1896) Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Volume X: Apidae (Anthophila). Engelmann, Leipzig, 644 pp.

Krombein KV (1958) Superfamily Apoidea. In: Krombein KV. Hymenoptera of America North of Mexico Synoptic Catalog (Agriculture Monograph No. 2). First supplement . United States Government Printing Office, Washington. Pp. 204-261.

Linsley EG (1951) Superfamily Apoidea. In: Muesebeck CFW, Krombein KV, Townes HK (Eds) Hymenoptera of America north of Mexico Synoptic Catalog. United States Department of Agriculture Agricultural Monograph 2, Washington, 1420 pp.

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

Hurd PD, Linsley EG (1951) The melectine bees of California (Hymenoptera: Anthophoridae). Bulletin of the California Insect Survey 1(5): 119-140.

Linsley EG (1939) A revision of the Nearctic Melectinae. Annals of the Entomologcal Society of America 32(2): 429-468.

Hurd PD (1979) Introduction. Pgs. vii-xxx. In Krombein KV, Hurd PD Jr, Smith DR. Catalog of Hymenoptera in America North of Mexico. Volume 3. Indexes. Smithsonian Institution Press, Washington, DC.

Cockerell TDA (1921) Descriptions and records of bees.—XC. Annals and Magazine of Natural History, Series 9 7(39): 201-212.

Linsley EG (1938) Notes on the synonymy and distribution of some North American bees of the genus Bombomelecta (Hymenoptera). Entomological News 49: 160-163.

Viereck HL (1903) Classification of bees of the genus Bombomelecta. Transactions of the American Entomological Society 29(2): 179-182.

Michener CD (1948) Notes on the American bees of the genus Melecta (Hymenoptera, Apoidea). Proceedings of the Entomological Society of Washington 50(1): 15-18.

Sociality: Parasitic
Nesting: Ground
Pollen Specialization: Not Applicable

Crop Preference: Not Available
Non Crop Preference: Not Available

Distribution: Alberta, British Columbia
Ecozone: Montane Cordillera, Prairie, Western Interior Basin

Distribution Map