Arcata Fish and Wildlife Office
Pacific Southwest Region
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Endangered Species Program

The Endangered Species Program in the Arcata Fish and Wildlife Office has the responsibilities for activities specified under the Endangered Species Act of 1973, as Amended, for Del Norte, Humboldt, Mendocino, Siskiyou, and Trinity Counties, California. The activities include: listing and delisting, recovery actions, Section 7 consultation with Federal agencies, section 10(a)(1)(A) research permits, as well as providing technical assistance to requesting agencies.

Click here to access our species list generator for determining whether there are listed species within an area of interest for projects within the Arcata Fish and Wildlife Office jurisdiction.

To comment on any Federal rule, go to the Federal eRulemaking Portal:

Endangered Species Act Listing Link
Plant and Animal Species Information Link

The Arcata Fish and Wildlife Office collects and maintains information on listed species that are found in Del Norte, Humboldt, Trinity, Mendocino, and western Siskiyou Counties. MORE-->

Plant and Animal Species Information Link
Endangered Species Act Listing Link

The Arcata Fish and Wildlife Office, an “Ecological Services” field office of the Fish and Wildlife Service, participates in the process of listing species under section 4 of the Endangered Species Act, or ESA. MORE-->

Consultation Link

Consultation Photo Link

One of the primary roles of the Ecological Services staff in the Arcata Fish and Wildlife Office includes consultation with other Federal agencies on their projects that may affect species listed under ESA. MORE-->
Recovery Link
Recovery photo link

One of the key goals of the Endangered Species Act is to recover species in the native ecosystems to the point where protections of the Endangered Species Act are no longer needed. MORE-->

Habitat Conservation Planning Link

HCP Photo Link

n the 1982 amendments to the Endangered Species Act, Congress established a mechanism under section 10(a)(1)(B) authorizing the U.S. Fish and Wildlife Service and NOAA Fisheries Service to issue to non-Federal entities a permit for the "incidental take" of endangered and threatened wildlife species. MORE-->
Featured Project:

Final Recovery Plan for Behren's Silverspot butterfly

Behren’s silverspot butterfly (Speyeria zerene behrensii) inhabits coastal terrace prairie habitat west of the Coast Range, in southern Mendocino and northern Sonoma Counties, California. Historically known from six locales, the subspecies persists in low numbers in disjunct populations where suitable habitat occurs.  Distribution of the Behren’s silverspot butterfly is highly dependent on the availability of caterpillars host plant, early blue violet (Viola adunca), and adult nectar sources. 

The final Recovery Plan will help guide recovery efforts for the endangered Behren’s silverspot butterfly (Speyeria zerene behrensii). Recovery actions identified in the Recovery Plan include protection and management of suitable habitat, and further study of the ecological requirements and population constraints of the species. Protecting suitable habitat throughout the historic range of the butterfly, with particular focus on major historical centers (identified “metapopulations”), the Service will work with partners and willing private landowners to protect, maintain, and improve habitat.

Behren’s silverspot butterfly was listed as endangered in 1997, and a draft recovery plan was published in January 2004. Critical habitat for the butterfly has not been designated.

Last updated: April 16, 2015