North American Butterflies

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This document is provided as a means of accessing the data base of Butterflies of the United States and Northern Mexico maintained by the Northern Prairie Wildlife Research Center.   These links will take you to the Northern Prairie Wildlife Research Center web site where you can view butterflies in your state.

North America Distribution Maps
Photos, species accounts, and combined maps for butterflies occurring in the conterminous U.S. and northern Mexico
 

Western States

Great Plains States

Eastern States

Other
bullet Arizona
bullet California
bullet Hawaii
bullet Idaho
bullet Nevada
bullet Oregon
bullet Utah
bullet Washington
bullet Colorado
bullet Iowa
bullet Kansas
bullet Minnesota
bullet Missouri
bullet Montana
bullet Nebraska
bullet New Mexico
bullet North Dakota
bullet Oklahoma
bullet South Dakota
bullet Texas
bullet Wyoming
bullet Alabama
bullet Arkansas
bullet Connecticut
bullet Delaware
bullet Florida
bullet Georgia
bullet Illinois
bullet Indiana
bullet Kentucky
bullet Louisiana
bullet Maine
bullet Maryland
bullet Massachusetts
bullet Michigan 
bullet Mississippi
bullet New Hampshire
bullet New Jersey
bullet New York
bullet North Carolina
bullet Ohio
bullet Pennsylvania
bullet Rhode Island
bullet South Carolina
bullet Tennessee
bullet Virginia
bullet Vermont
bullet West Virginia
bullet Wisconsin
bullet Northern Mexico


Species Information -- Each species entry contains up to three types of information:

  1. Camera Icon Entries with color photos are marked with this icon.
  2. Book Icon Entries marked with this icon contain textual descriptions and other information, such as life history, required habitat, and conservation concerns.
  3. Maps -- All entries have distribution maps.

Map Legend: Counties shaded dark blue have reliable records and meet the criteria as stated below. Counties shaded light blue are possible locales according to questionable records. In the atlases, a county is shaded if there is a specimen that had been reviewed by one or more authors, or published in peer-reviewed literature. Other records with full data have been accepted for all but the most difficult taxa. Many individual specimens have been referred to accepted authorities for confirmation of identification.

This resource is based on the following sources: 
Opler, Paul A.  1995.  Lepidoptera of North America: 2. Distribution of the 
     butterflies (Papilionoidea and Hesperioides) of the eastern United States.  
     Contributions of the C.P. Gillette Museum of Insect Biodiversity.  
     Colorado State University, Fort Collins, Colo.  Unpaginated.

Pavulaan, Harry and Paul A. Opler.  1995.  Atlas of eastern butterflies.    
     Unpublished information.

Stanford, Ray E. and Paul A. Opler.  1993.  Atlas of western USA butterflies, 
     including adjacent parts of Canada and Mexico.  Published by authors. 
     Denver, Colorado.  275pp.
 This resource should be cited as: 
Opler, Paul A., Harry Pavulaan, and Ray E. Stanford.  1995.  Butterflies of North
     America.  Jamestown, ND: Northern Prairie Wildlife Research Center Home Page.
     http://www.npwrc.usgs.gov/resource/distr/lepid/bflyusa/bflyusa.htm 
     (Version 16OCT97).

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This site was last updated 08/19/07