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Andrena nuda Robertson, 1891


Scientific Name: Andrena nuda Robertson, 1891

Common Name: Nude Mining Bee


Andrena nuda Robertson, 1891: 57 [♀].

     Lectotype ♀, designated by LaBerge (1973: 335). USA, Illinois, Carlinville, by C. Robertson [INHS Robertson no. 1012].

Andrena (Trachandrena) davisiana Viereck and Cockerell, 1914: 6 [♂]. Synonymy by LaBerge (1973: 333).

     Holotype ♂. USA, Colorado, Boulder, 8 May 1907, by J.M. Davis [CAS no. 15326].

Andrena (Trachandrena) pseudobscura Mitchell, 1960: 193 [♂]. Synonymy by LaBerge (1973: 333).

     Holotype ♂. USA, North Carolina, Raleigh, 16 March 1945, by T.B. Mitchell, on Salix [USNM no. 75187].


Taxonomic notes: LaBerge (1973: 335) incorrectly recorded details of the type specimen of Andrena davisiana Viereck and Cockerell, 1914 as “May 8, 1917”, and collected “ by I. M. Davis”; in the original work, the collection year recorded was 1907, and collected by J.M. Davis.

Distribution in Canada: C.S. Sheffield, in City of Toronto 2016 [ON].

Inclusion of this species in ON in the “Bees of Toronto” booklet was based on an observation recorded on Discover Life (Ascher and Pickering 2015); its presence in ON has now been confirmed [pers. comm., Steven Paiero, University of Guelph].


LaBerge WE (1973) A revision of the bees of the genus Andrena of the Western Hemisphere. Part VI. Subgenus Trachandrena. Transactions of the American Entomological Society 99(3): 235-371.

Mitchell TB (1960) Bees of the Eastern United States. Volume 1. North Carolina Agricultural Experiment Station Technical Bulletin 141: 1-538.

Robertson C (1891) Descriptions of new species of North American bees. Transactions of the American Entomological Society 18(1): 49-66.

Viereck HL, Cockerell TD (1914) New North American bees of the genus Andrena. Proceedings of the United States National Museum 48: 1-58.

City of Toronto (2016) Bees of Toronto. A Guide to Their Remarkable World. City of Toronto Biodiversity Series. 68 pp.

Sociality: Solitary
Nesting: Ground
Wintering Stage: Adult

Crop Preference: Not Available
Non Crop Preference: Not Available

Distribution: Ontario
Ecozone: Mixwood Plains