Scientific Name

Common Name

Status

Canada

Mexico

United States

Speyeria idalia

Regal fritillary

Vulnerable

MB, ON

 

AR, CO, CT, DC, DE, IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, NC, ND, NE, NH, NJ, NY, OH, OK, PA, RI, SD, VA, VT, WI, WV, WY

Speyeria zerene behrensii*

Behren silverspot

Critically imperiled

 

 

CA

Speyeria zerene hippolyta*

Oregon silverspot

Critically imperiled

 

 

CA, OR, WA

Speyeria zerene myrtleae*

Myrtle silverspot

Critically Imperiled

 

 

CA

Stallingsia maculosus

Manfreda giant-skipper

Imperiled

 

NL, ?

TX

KEY: Imperiled, at high risk of extinction because of highly restricted range, rare populations (often 20 or fewer), steep declines, or other factors; data deficient, inadequate information for assessment of risk category because of a lack of information about population size or about threats to the population or because of taxonomic uncertainty about the validity of the taxon; vulnerable, at moderate risk of extinction because of restricted range, relatively rare populations (often 80 or fewer), recent and widespread declines, or other factors; critically imperiled, at high risk of extinction because of extreme rarity of populations (often 5 or fewer), steep declines, or other factors; possibly extinct, missing or known only from historical occurrences but with some hope of rediscovery.

*Listed under the terms of the U.S. Endangered Species Act.

†Listed under the terms of Canada’s Species at Risk Act.

SOURCE: Adapted from Shepherd, M.D., D.M. Vaughan, and S.H. Black (Eds). Red List of Pollinator Insects of North America. CD-ROM Version 1 (May 2005). Xerces Society for Invertebrate Conservation, Portland, Oregon, http://www.xerces.org/Pollinator_Red_List/ Table_Lepidoptera.htm.



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