Bees of Canada Logo

Dufourea trochantera Bohart, 1948


Scientific Name: Dufourea trochantera Bohart, 1948

Common Name: Dufourea trochantera


Dufourea trochantera Bohart, 1948: 121 [♂, ♀].

     Holotype ♂. USA, California, Mono Co., Mammoth Lakes, 9000 ft., 22 July 1936, by G.E. Bohart and R.M. Bohart [CAS no. 5972].


Taxonomic notes: Bohart (1948: 123) did not clearly indicate the sex of the holotype or allotype, though the male was described first.

DNA Barcode Index Number (BIN): BOLD:AAD2710

Biology: Dufourea trochantera Bohart, 1948 is oligolectic on Phacelia Jussieu (Hydrophyllaceae) (Torchio et al. 1967; Lincoln 1981; Dumesh and Sheffield 2012).

Torchio et al. (1967) described the nesting biology and nest architecture and discussed embryonic development. They also indicated that an undescribed species of Biastes (Neopasites) was a likely nest parasite; Biastes cressoni (Crawford, 1916) is a nest parasite of the closely related Dufourea mulleri (Cockerell, 1898), also a Phacelia specialist not recorded from Canada. Co-occurrence of B. cressoni with D. trochantera in Canada lends support for the latter also serving as a host.

Bohart and Irwin (1978) and Kathirithamby and Taylor (2005) reported Dufourea trochantera Bohart, 1948 as the host for strepsipteran Eurystylops sierrensis Bohart, 1978; the genus Eurystylops seemingly specializes on Dufourea Lepeletier, 1841and other rophitine bees (Bohart 1943; Bohart and Irwin 1978).

Distribution in Canada: Dumesh and Sheffield 2012 [BC]; Elwell et al. 2016 [BC]; Sheffield and Heron 2019 [BC].


Bohart GE (1948) New North American bees of the genus Dufourea (Hymenoptera: Halictidae) Part II. Annals of the Entomological Society of America 41(1): 191-136.

Dumesh S, Sheffield CS (2012) Bees of the genus Dufourea Lepeletier (Hymenoptera: Halictidae: Rophitinae) of Canada. Canadian Journal of Arthropod Identification 20: 1-36.

Elwell SL, Griswold T, Elle E (2016) Habitat type plays a greater role than livestock grazing in structuring shrubsteppe plant–pollinator communities. Journal of Insect Conservation 20(3): 515-525.

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

Kathirithamby J, Taylor SJ (2005) A new species of Halictophagus (Insecta: Strepsiptera: Halictophagidae) from Texas, and a checklist of Strepsiptera from the United States and Canada. Zootaxa 1056: 1-18.

Torchio PF, Rozen JG, Bohart GE, Favreau MS (1967) Biology of Dufourea and of its cleptoparasite, Neopasites (Hymenoptera: Apoidea). Journal of the New York Entomological Society 75(3): 132-146. 0

Bohart RM (1943) A new generic name in Strepsiptera and description of a new species (Strepsiptera, Stylopidae). Bulletin of the Brooklyn Entomological Society 38(1): 12-13.

Bohart RM, Irwin ME (1978) A Study of stylopization in the bee genus Dufourea. The Pan-Pacific Entomologist 54(2): 98-102.

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

Crop Preference: Not Available
Non Crop Preference: Not Available

Distribution: British Columbia
Ecozone: Western Interior Basin