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Global Range: (Unknown) This was a rarely collected but widespread species with a similar range to many other western Osmia. The original range was more than half a million square miles. Any current range is unknown. Discover Life maps only the following: Bon Accord Alberta in 1909, Glacier National Park, British Columbia in 1916, Seattle (no date but probably around 1900) and Whitman County, Washington in 2003; and four from California, Sonoma County in 1911, Mariposa and Tuolumne Counties in 2006, and Fresno County in 1930, and Boulder Co., Colorado April 20, no year collected by Cockerel (so ca. 1910s). Kearns and Oliveras (2009) listed this one as expected but not found in their Boulder County inventory. State level only records are given by both Discover Life and Krombein et al. (1979) for Oregon, Idaho, and Wyoming. Scott et al. (2011) also report Moffat County, but details are unavailable.


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Source: NatureServe

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