IUCN threat status:

Critically Endangered (CR)

Distribution

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Range Description

This species is known only from Shasta County, California, USA. It is more specifically known from isolated portions of the Pit River drainage. The current range is greatly reduced to much smaller and more isolated stream sections in the same watersheds (Millar 2004). This species has an estimated extent of occurrence of 13 km2.

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Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

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