Scientific Name: Eucera actuosa (Cresson, 1878)
Common Name: Eucera actuosa
Melissodes actuosa Cresson, 1878: 208 [♀]
Lectotype ♀ [designated by Cresson 1916: 110]. USA, California, by H. Edwards [ANSP no. 2320]
Diadasia 3-cincta Provancher, 1896: 28 [♀] [synonymy by Sheffield and Perron 2014: 147]
Lectotype ♀ [designated by Sheffield and Perron 2014: 147]. USA, California, Los Angeles [ULQC no. 1731]
Didasia tricincta Fowler, 1899: 286 [emended name; Sheffield and Perron 2014: 147]
Synhalonia californica Fowler, 1899: 137 [♀] [preoccupied; not Eucera californica (Cresson, 1878)] [synonymy by Cockerell 1905: 28 [of S. fowleri Cockerell]; ]
Syntypes ♀. USA, California, Berkeley, 1, 9 May 1898, by H.O. Woodworth and C. Fowler 
Synhalonia fowleri Cockerell 1905: 28 [♀]
Syntypes ♀. USA, California, Los Angeles [six specimens]; Lancaster [one specimen], by Davidson 
This species was first recorded from British Columbia by Criddle et al. (1924), and subsequently listed from the province by Michener (1951e) and Sheffield and Heron (2019). Although Synhalonia territella Cockerell 1905 was listed as a synonymy of Eucera actuosa by Hurd (1979: 2125); more recent works have treated it as a valid species (Toler et al. 2005; Tepidino et al. 2010). Therefore, it is not included in the list of synonymies here.
Index of Area of Occupancy (IAO) in Canada (http://geocat.kew.org/): 64 km2
Cockerell TDA (1905) The bees of southern California. VIII. Bulletin of the Southern California Academy of Sciences 4: 28-33.
Cresson ET (1878) Descriptions of new species of North American bees. Proceedings of the Academy of Natural Sciences of Philadelphia 30: 181-221.
Criddle N, Curran CH, Viereck HL, Buckell ER (1924) The entomological record, 1923. Annual Report of the Entomological Society of Ontario 54:87–102.
Fowler C (1899) The Synhalonia of California. The Canadian Entomologist 31(6): 137-138. https://doi.org/10.4039/Ent31137-6
Fowler C (1899) The Habropoda and Didasia of California. The Canadian Entomologist 31(1): 283–286. https://doi.org/10.4039/Ent31283-10
Provancher L (1896) Les dernie`res descriptions de l’abbe´ Provancher, Ordre des Hyme´nopte`res. Naturaliste canadien 23: 27–28.
Tepidino VJ, Griswold TL, Bowlin (2010) Reproductive biology, hybridization, and flower visitors of rare Sclerocactus taxa in Utah\'s Uintah Basin. Western North American Naturalist 70(3): 377–386. https://doi.org/10.3398/064.070.0310
Toler TR, Evans EW, Tepedino VJ 2005) Pan-trapping for bees (Hymenoptera: Apiformes) in Utah\'s West Desert: the importance of color diversity. The Pan-Pacific Entomologist 81(3/4): 103-113.
Pollen Specialization: Polylectic
Wintering Stage: Adult
Crop Preference: Not Available
Non Crop Preference: Not Available
Distribution: British Columbia
Ecozone: Pacific Maritime, Western Interior Basin