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Hoplitis grinnelli septentrionalis Michener, 1947


Scientific Name: Hoplitis grinnelli septentrionalis Michener, 1947

Common Name: Grinnell's Small-Mason


*Hoplitis (Alcidamea) grinnelli septentrionalis Michener, 1947: 291 [♂, ♀].

     Holotype ♂. CANADA, British Columbia, Salmon Arm, 20 June 1925, by A.A. Dennis [CNC].


Taxonomic notes: Michener (1947: 291) distinguished this northern subspecies from the typical form from the southwestern United States based on the darker tegula.

DNA Barcode Index Number (BIN): BOLD:AAD0303

Biology: Michener (1947: 270) indicated the study of the nesting biology of H. producta (Cresson, 1864) of Davidson (1896) was likely in reference to H. grinnelli (Cockerell, 1910). Frolich et al. (1988) reported this species using trap nests. 

Distribution in Canada: Michener 1947 [BC]; Buckell 1950 [BC]; Hurd and Michener 1955 [BC]; Elwell 2012 [BC]; Rowe 2017 [BC]; Sheffield and Heron 2019 [BC].

Body length: ♀ 6 - 8 mm ♂ 5.5 - 7 mm


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

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

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

Michener CD (1947b) A revision of the American species of Hoplitis (Hymenoptera, Megachilidae). Bulletin of the American Museum of Natural History 89(4): 257-318.

Elwell SL (2012) The effects of livestock grazing and habitat type on plant-pollinator communities of British Columbia’s Endangered Shrubsteppe. MSc Thesis, Simon Fraser University. X + 110 pp.

Rowe G (2017) A taxonomic revision of the Canadian non-Osmia Osmiini (Hymenoptera: Megachilidae). MSc Thesis, York University, Toronto. xv + 321 pp.

Sociality: Solitary
Nesting: Cavity Renter
Pollen Specialization: Polylectic
Wintering Stage: Mature Larva

Crop Preference: Not Available
Non Crop Preference: Not Available

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

Distribution Map