IUCN threat status:

Least Concern (LC)


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Range Description

This species is distributed across continental USA and Canada, covering temperate to sub-Arctic regions, including southern Alaska and northwestern Canada (although not the extreme north), and ranging east and southeast to central Labrador. In the USA, this species occurs across western New England, including the vicinity of New York City, south and central California, Utah, Nevada, Colorado; it is ranging to the central Great Plains in eastern Kansas, and eastern Oklahoma, and east to the southern Appalachian Mountains. Its more southern range includes higher elevations, such as the discontinuous areas of the Mogollon Plateau and White Mountains, Arizona; it is also found in Jemez, San Juan, Sangre de Cristo, and Zuni Mountains in New Mexico (Natureserve 2009 quoting Taylor 2003). It extends across the border into Mexico.

However, despite this extensive range, this species is now considered rare (using Natureserve terminology) in North Carolina, with few sites in the northwest, east and along the north east coast (Dillon et al. 2006). In Georgia, it is only found in a single spring in the Dekalb county park (Dillon et al. 2006).


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© International Union for Conservation of Nature and Natural Resources

Source: IUCN

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