Introduction

A description of this resource and the information it contains

Photo Thumbnails

Identify a butterfly by navigating through thumbnails of all of our photos

Checklists

Checklists of all species reported in a particular county (U.S.) or state (northern Mexico)

Distribution Maps

Great Plains

Colorado -- Iowa -- Kansas -- Minnesota -- Missouri -- Montana -- North Dakota -- Nebraska -- Oklahoma -- New Mexico -- South Dakota -- Texas -- Wyoming

East of Great Plains

Alabama -- Arkansas -- Connecticut -- Delaware -- Florida -- Georgia -- Illinois -- Indiana -- Kentucky -- Louisiana -- Maine -- Maryland -- Massachusetts -- Michigan -- Mississippi -- New Hampshire -- New Jersey-- New York -- North Carolina -- Ohio -- Pennsylvania -- Rhode Island -- South Carolina -- Tennessee -- Vermont -- Virginia -- Wisconsin -- West Virginia

West of Great Plains

Alaska -- Arizona -- California -- Hawaii -- Idaho -- Nevada -- Oregon -- Utah -- Washington

Northern Mexico

Other Butterfly Information

Atlas of North Dakota Butterflies

A stand-alone resource dedicated to the butterflies of North Dakota

Other Links

Links to other moth and butterfly resources on the Internet

Moths and Butterflies of the Montane Cordillera Ecozone

State Coordinators

Who to contact to verify new county records in your state

Acknowledgments

Individuals and organizations who have contributed photos for this project and helped compile distribution records

References

Publications used to compile distribution records and aid in the construction of this resource, as well as those with general information about moths and butterflies

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     Unpublished information.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.

Opler, Paul A., Harry Pavulaan, and Ray E. Stanford (coordinators).  
     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 05DEC2001).

     Dr. Paul A. Opler
     P.O. Box 2227
     Loveland, CO 80539
     email: paulevi@webaccess.net
     homepage: http://www.mesc.usgs.gov/staff/Opler.html
     (Contact for ordering eastern USA atlas)

     Dr. Ray E. Stanford
     720 Fairfax Street
     Denver, CO 80220
     (Contact for ordering western USA atlas)
     email: r.k.stanford@mindspring.com

     Harry Pavulaan
     494 Fillmore Street
     Herndon, VA 20170
     email: Hpavulaan@aol.com