Speyeria zerene behrensii

Behren's Silverspot Butterfly

FWS Focus

Overview

The Behren’s silverspot butterfly is a medium-sized butterfly with a wingspan of approximately 2.2 inches. The upper surfaces are golden brown with numerous black spots and lines. Wing undersides are brown, orange-brown, and tan with black lines and distinctive silver and black spots. This species was historically recorded from several coastal locations from central Sonoma County north to near the City of Mendocino, Mendocino County, California. Within the past decade, the species has been observed at only three areas: two highly localized sites in Sonoma County, and a cluster of observations, perhaps representing a metapopulation, in southern Mendocino County. The butterfly is associated with grasslands on coastal terraces and stabilized dunes, where its larval host plant, the early blue violet (Viola adunca) occurs. Disturbance is probably important in maintaining suitable habitat for the species; in the absence of disturbance, shrubs and coastal pines can colonize coastal prairies and degrade or eliminate habitat. Key resources for the species include sufficient violets to support larval development for a population, as well as nectar sources for the adult butterflies.

Scientific Name

Speyeria zerene behrensii
Common Name
Behren's silverspot Butterfly
FWS Category
Insects
Kingdom

Location in Taxonomic Tree

Identification Numbers

TSN:

Geography

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Timeline

Explore the information available for this taxon's timeline. You can select an event on the timeline to view more information, or cycle through the content available in the carousel below.

12 Items

Listing

Listing

Listing

Listing

Listing

Recovery Plan

Five Year Review

Five Year Review

Five Year Review

Five Year Review

Recovery Plan

Five Year Review

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Listing

Nov 1, 1990

Nov 1, 1990 Listing (Substantial)
ETWP; 90-Day Findings and Commencement of Status Reviews for Five Petitions to List Six Species as T…
  • Publication type: 90 day petition finding
Item 1

Listing

Feb 4, 1994

Feb 4, 1994 Listing (Endangered)
ETWP; Proposed Endangered Status for the Callippe Silverspot Butterfly, Behren's Silverspot But…
  • Publication type: Proposed
Item 2

Listing

Feb 28, 1996

Feb 28, 1996 Listing
ETWP; Review of Plant and Animal Taxa That Are Candidates for Listing as Endangered or Threatened S…
  • Publication type: CNOR
Item 3

Listing

Sep 19, 1997

Sep 19, 1997 Listing
Review of Plant and Animal Taxa
  • Publication type: CNOR
Item 4

Listing

Dec 5, 1997

Dec 5, 1997 Listing (Endangered)
ETWP; Determination of Endangered Status for the Callippe Silverspot Butterfly of Behren's Silv…
  • Publication type: Final
Item 5

Recovery Plan

Jan 20, 2004

Jan 20, 2004 Recovery Plan (Document Availability (non-FR))
Draft Recovery Plan for Behren's Silverspot Butterfly (Speyeria zerene behrensii)
  • Publication type: Draft
Item 6

Five Year Review

Mar 22, 2006

Mar 22, 2006 Five Year Review (Information Solicitation)
Initiation of 5-Year Reviews of 56 Species in California and Nevada: Notice of review.
  • Publication type: Notice
Item 7

Five Year Review

Mar 25, 2009

Mar 25, 2009 Five Year Review (Completion)
Initiation of 5-Year Reviews of 58 Species in California, Nevada, Arizona, and Utah; Availability of…
  • Publication type: Notice
Item 8

Five Year Review

May 25, 2011

May 25, 2011 Five Year Review (Information Solicitation)
Initiation of 5-Year Reviews of Species in California, Nevada, and the Klamath Basin of Oregon
  • Publication type: Notice
Item 9

Five Year Review

Apr 1, 2013

Apr 1, 2013 Five Year Review (Completion)
Initiation of 5-Year Reviews of 56 Species in California and Nevada; request for information
  • Publication type: Notice
Item 10

Recovery Plan

Apr 1, 2016

Apr 1, 2016 Recovery Plan (Document Availability (non-FR))
Recovery Plan for the Behren's Silverspot Butterfly; Notice of Availability
  • Publication type: Final
Item 11

Five Year Review

Jul 26, 2019

Jul 26, 2019 Five Year Review (Information Solicitation)
Initiation of 5- Year Status Reviews of 58 Species in California, Nevada, and the Klamath Basin of…
  • Publication type: Notice
Item 12