Scientific Name: Anthidiellum robertsoni (Cockerell, 1904)
Common Name: Anthidiellum robertsoni
Dianthidium robertsoni Cockerell, 1904: 4 [â™€,â™‚]
Syntypes â™€,â™‚. USA, California, Los Angeles and Rock Creek, by Dr. Davidson 
Anthidiellum robertsoni race citrinellum Cockerell, 1925: 362 [â™‚]
Holotype â™‚. USA, California, Fresno Co., Huntington Lake at 7000 ft, 17 July 1919, by E.P. Van Duzee [CAS no. 1744]
Based on distinct differences in the cytochrome c oxidase I (COI) gene that resulted in two distinct Barcode Index Numbers (BINs) (see Sheffield et al. 2017), Sheffield and Heron (2018) agreed with Urban (2001) and considered A. robertsoni a separate species from the eastern A. notatum (Latreille).
The DNA Barcode Index Number (BIN) for this species is BOLD:AAE5295.
The nesting biology of A. robertsoni was reported from British Columbia by Leech (1947). The nest was a single cell constructed on the flat underside of a piece of wood (Douglas fir), and was 13 mm long with an apical spike, appeared somewhat warty, and was greenish black with a vitreous surface.
Pollen Specialization: Polylectic
Wintering Stage: Mature Larva
Crop Preference: Not Available
Non Crop Preference: Not Available
Distribution: British Columbia
Ecozone: Western Interior Basin