Was ranked as secure in 2011, revised later as Undetermined. Group recently revised, undetermined is a reflection of not really having enough historical versus present data from the NWT to draw solid conclusion. (C Sheffield e-mail 12-06-2012 to S Carriere June 2012); This species is widespread in Canada, and can be rather common on its host plant (Phacelia). There are large areas of NT that do not have adequate survey coverage and this bee may occur within those areas. Actual distribution of the bee may be more widespread based on the distribution of its floral hosts. The host plant(s) are not considered at risk or highly vulnerable to potential threats. Northwest Territories is a large jurisdiction with a land area of approximately 1,346,106 km2. The territory includes five ecozones (Arctic, Boreal Plains, Taiga Cordillera, Taiga Plains and Taiga Shield). The largest ecozones represented in this territory are the Taiga Plains and Taiga Shield. Threats to bees and bee communities in this territory are unknown although are likely minimal. The bee fauna in this territory is poorly studied in most areas , mainly due to inaccessibility, excluding urban areas and transport corridors connecting these urban areas. The ecozones within the jurisdiction remain largely unmodified, aside from the longer-term effects of climate change. Given the natural history information available, we assume that the bee fauna is largely unchanged, albeit only suitable in habitats with floral resources and nesting sites. In Canada known from YT, NT, BC, AB, and SK. Found in five ecozones (Taiga Plains, Taiga Shield, Western Interior Basin and Prairies). Floral specialist of Phacelia. Actual distribution of the bee may be more widespread based on the distribution of its floral host. Solitary bee. Cavity nester, building nest between rocks. Cumulative threats, mainly within areas of human habituation, include habitat loss and/or conversion to agriculture/urban development, invasive non-native species, climate change, livestock grazing, recreational use, etc. (as outlined in short and long-term trends) and have all likely contributed to declines in bee abundance. The specific impact to each bee species is unknown due to lack of specimen data, surveys, natural history information of a species and analysis of these impacts on these variables. These threats may not applicable to portions of ecozones with large natural areas. Species specific threats are unstudied for most bees. (HSS010)