Scientific Name: Panurginus beardsleyi (Cockerell, 1904)
Common Name: Beardsley s Miner Bee
Greeleyella beardsleyi Cockerell, 1904: 236 [♀]
Holotype ♀. USA, Colorado, Greeley, Colorado Normal School, 3 June 1900, by Beardsley 
Panurginus malvastri Swenk and Cockerell, 1907: 179 [♂‚,♀] [synonymy by Stevens 1919: 208]
Syntypes ♂‚,♀. USA, Nebraska, Sioux County, Warbonnet Canon, 13 June 1901, by M. Cary, on Malvastrum [=Sphaeralcea] [University of Nebraska State Museum]
Panurginus malvastri was placed into synonymy under P. beardsleyi by Stevens (1919: 208), which was followed by Hurd (1979) but not on Discover Life. Some females from Utah and Saskatchewan have the clypeus with a slight maculation, though DNA barcodes from these individuals do not vary from those without the maculation.
The DNA Barcode Index Number (BIN) for this species is BOLD:AAF1811.
Cockerell (1922) indcated that this species was an oligolege of Sphaeralcea coccinea.
Cockerell TDA (1904) New records of bees. The Entomologist 37: 231-236.
Cockerell TDA (1922) Bees of the genus Panurginus obtained by the American Museum Rocky Mountain Expeditions. American Museum Novitates 36: 1-10.
Swenk MH, Cockerell TDA (1907) The bees of Nebraska.–II. Entomological News 18: 178â€‘187.
Stevens OA (1919) The panurgine bees of North Dakota and a new Epeolus (Hym.). The Canadian Entomologist 51(8): 205â€‘210. https://doi.org/10.4039/ent51205-8
Pollen Specialization: Narrow Oligolecty
Wintering Stage: Mature Larva
Distribution: Alberta, Saskatchewan