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Anthidium tenuiflorae Cockerell, 1907


Scientific Name: Anthidium tenuiflorae Cockerell, 1907

Common Name: Anthidium tenuiflorae


Anthidium tenuiflorae Cockerell, 1907: 135 [♀, ♂].

     Holotype . USA, Colorado, Boulder, 8 August 1906, by W.P. Cockerell, on Psoralea tenuiflora [UCR no. UCRC ENT 351065].

*Anthidium tenuiflorae yukonense Cockerell, 1926: 622 []. Synonymy by Grigarick and Stange (1968: 32).

     Holotype . CANADA, Yukon, Carcam [AMNH].


Taxonomic Notes: Cockerell (1907: 135) did not clearly designate a type specimen from the single male from Boulder Colorado collected 12 June 1905, by W.P. Cockerell, and the two females, one collected the same date as the male, and the second female collected on 8 August 1906. Though Grigarick and Stange (1968: 32) and Gonzalez and Griswold (2013: 359) indicated that the female holotype is at UCR, neither work clearly indicates which female; it is the latter.

Cockerell (1926: 622) considered A. tenuiflorae yukonense Cockerell a “well-defined northern race”, and though Schwarz (1928: 379) commented on intermediate forms between the typical form and yukonense, he still recognized it as a variety in later works (Schwarz 1940: 4).

Both Grigarick and Stange (1968: 32) and Gonzalez and Griswold (2013: 360) incorrectly record the type locality of A. tenuiflorae yukonense Cockerell as “Carcam” instead of Carcross.

DNA Barcode Index Number (BIN): BOLD:AAC1397

Biology: Hicks (1926) indicated that this species nests in holes in the ground and uses pebbles to build the nest plug.

Distribution in Canada: Cockerell 1911 [SK], 1936 [AB]; Gibson 1911 [SK], 1917 [BC, AB, SK]; Cockerell 1926 [YT, as A. tenuiflorae yukonense]; Criddle 1927 [YT, as A. tenuiflorae yukonense]; Schwarz 1927 [AB, SK], 1928 [NT, BC, AB, SK]; Buckell 1950 [BC]; Pengelly, in McNally 1955 [NT, BC, AB, SK, ON]; Grigarick and Stange 1968 [Northwest Canada]; Gonzalez and Griswold 2013 [YT, BC, AB, SK]; Sheffield et al. 2014 [AB, SK]; Sheffield and Heron 2019 [BC]; Gibbs et al. 2023 [MB].

The ON record of Pengelly (in McNally 1955: 129) has not been confirmed, and was not include in the treatment of Anthidiini of that province (Romankova 2003).

Body length: ♀ 8.0 - 9.3 mm ♂ 8.9 - 12.1 mm

Forewing length: ♀ 6.2 - 7.4 mm ♂ 6.9 - 8.5 mm


Cockerell TDA (1926) Descriptions and records of bees.—CXIII. Annals and Magazine of Natural History, Series 9 18(108): 621-627.

Sheffield CS, Frier SD, Dumesh D (2014) The bees (Hymenoptera: Apoidea, Apiformes) of the Prairies Ecozone, with comparisons to other grasslands of Canada. In: Giberson DJ, Cárcamo HA (Eds) Arthropods of Canadian Grasslands (Volume 4): Biodiversity and Systematics Part 2. 4. Biological Survey of Canada, Ottawa, 479 pp. [ISBN 978-0-9689321-7-9].

Gibbs J, Hanuschuk E, Miller R, Dubois M, Martini M, Robinson S, Nakagawa P, Sheffield CS, Onuferko T (2023) A checklist of the bees (Hymenoptera: Apoidea) of Manitoba, Canada. The Canadian Entomologist 155: E3.

Sheffield CS, Heron JM (2019) The bees of British Columbia (Hymenoptera: Apoidea, Apiformes). Journal of the Entomological Society of British Columbia 115: 44-85.

Grigarick AA, Stange LA (1968) The pollen-collecting bees of the Anthidiini of California (Hymenoptera: Megachilidae). Bulletin of the California Insect Survey 9: 1-113.

Schwarz HF (1928) Bees of the subfamily Anthidiinae, including some new species and varieties, and some new locality records. Journal of the New York Entomological Society 36: 369-418.

Gibson A (1917) The entomological record, 1916. Annual Report of the Entomological Society of Ontario 47: 137-171.

Schwarz HF (1940) A key to the known anthidiine bees of Oregon, with description of some new forms. American Museum Novitates 1058: 1-8.

Cockerell TDA (1907) New anthidiine bees from Colorado. The Canadian Entomologist 39(4): 135-136.

Gonzalez VH, Griswold TL (2013) Wool carder bees of the genus Anthidium in the Western Hemisphere (Hymenoptera: Megachilidae): diversity, host plant associations, phylogeny, and biogeography. Zoological Journal of the Linnean Society 168: 221-425.

Buckell ER (1950) Record of bees from British Columbia: Megachilidae. Proceedings of the Entomological Society of British Columbia 46: 21-31.

Hicks CH (1926) Nesting habits and parasites of certain bees of Boulder County, Colorado. University of Colorado Bulletin 15: 217-252.

McNally AG (1955) Exhibits at the Annual Meeting. Annual Report of the Entomological Society of Ontario 89: 129.

Sociality: Solitary

Crop Preference: Not Available
Non Crop Preference: Not Available

Distribution: Alaska, Alberta, British Columbia, Manitoba, Northwest Territories, Ontario, Saskatchewan, Yukon
Ecozone: Prairie, Taiga Plains, Taiga Shield, Western Interior Basin

Male Anthidium tenuiflorae
Male Anthidium tenuiflorae

Distribution Map