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Atoposmia elongata (Michener, 1936)


Scientific Name: Atoposmia elongata (Michener, 1936)

Common Name: Atoposmia elongata


Osmia elongata Michener, 1936: 41 [♀].

     Holotype ♀. USA, California, San Bernardino Mountains, Bluff Lake, 15 July 1934, by C.D. Michener [Michener collection].


Taxonomic Notes: The ♂ was described by Michener (1943: 62).

DNA Barcode Index Number (BIN): BOLD:AAJ9474

Biology: Parker (1977) gave a detailed description of the nesting biology, indicating that nests were associated with rock outcroppings, specifically in cracks between the stones. Each nest contains 3-23 cells per nest. Unlike other Atoposmia, this species builds partitions between nests, but does not line all surfaces with nest building material (masticated plant material) (Parker (1977).

Moldenke and Neff (1974) reported this species as an oligolege of Penstemon.


Michener CD (1936) Some western bees of the genus Osmia. The Canadian Entomologist 68(2): 39-43.

Michener CD (1943) The American bees of the genus Anthocopa with notes on Old World subgenera (Hymenoptera, Megachilidae). Annals of the Entomological Society of America 36(1): 49-86.

Parker FD (1977) Nests of Anthocopa enceliae (Cockerell) and A. elongata (Michener) (Hymenoptera: Megachilidae). The Pan-Pacific Entomologist 53(1): 47-52.

Moldenke A, Neff J (1974) The bees of California: a catalogue with species relevance to pollination and ecological research. Tech. Rep. 74-3 (Part III of 3). 288 pp. Board of Studies in Biology, UC, Santa Cruz Campus, CA 95064.

Sociality: Solitary
Nesting: Mason
Pollen Specialization: Narrow Oligolecty
Wintering Stage: Mature Larva

Crop Preference: Not Available
Non Crop Preference: Penstemon sp.

Distribution: British Columbia