# Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Mount Charleston Blue Butterfly (Icaricia (Plebejus) shasta charlestonensis)
> **US Fish and Wildlife Service** · Final rule. · Published 2015-06-30 · Effective 2015-07-30 · 80 FR 37404
## Document
- **Document number:** 2015-15947
- **Category:** endangered-species
- **Sub-agency:** US Fish and Wildlife Service
- **Federal Register citation:** 80 FR 37404
- **CFR reference:** 50 CFR 17
- **Publication date:** 2015-06-30
- **Effective date:** 2015-07-30
- **Interior docket:** Docket No. FWS-R8-ES-2013-0105
## Abstract

We, the U.S. Fish and Wildlife Service (Service), designate critical habitat for the Mount Charleston blue butterfly (Icaricia (Plebejus) shasta charlestonensis) under the Endangered Species Act of 1973, as amended (Act). In total, approximately 5,214 acres (2,110 hectares) in the Spring Mountains of Clark County, Nevada, fall within the boundaries of the critical habitat designation. The effect of this rule is to extend the Act's protections to the butterfly's critical habitat.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/06/30/2015-15947/endangered-and-threatened-wildlife-and-plants-designation-of-critical-habitat-for-mount-charleston)
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