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Threatened or Endangered Butterflies in the United States

Common Name Scientific Name Threatened or Endangered
Bay Checkerspot Euphydryas editha editha (=E. e. bayensis) T
Behren's Silverspot Speyeria zerene behrensii E
Callippe Silverspot Speyeria callippe callippe E
El Segundo Blue Euphilotes battoides allyni E
Fender's Blue Plebejus icarioides fenderi E
Karner Blue Plebejus samuelis E
Lange's Metalmark Apodemia mormo langei E
Lotis Blue Plebejus anna lotis E
Mission Blue Plebejus icarioides missionensis E
Mitchell's Satyr Neonympha mitchellii mitchellii E
Myrtle's Silverspot Speyeria zerene myrtleae E
Oregon Silverspot Speyeria zerene hippolyta T
Palos Verdes Blue Glaucopsyche lygdamus palosverdesensis E
Quino Checkerspot Euphydryas editha quino (=E. e. wrighti) E
Saint Francis' Satyr Neonympha mitchellii francisci E
San Bruno Elfin Callophrys mossii bayensis E
Schaus Swallowtail Papilio aristodemus ponceanus E
Smith's Blue Euphilotes enoptes smithi E
Uncompahgre Fritillary Boloria improba acrocnema E
Carson Wandering Skipper Pseudocopaeodes eunus obscurus E
Laguna Mountains Checkered-Skipper Pyrgus ruralis lagunae E
Pawnee Montane Skipper Hesperia leonardus montana T
Click the Scientific Name to go to the Main Species Page on this website
Click the letter in the Threated or Endangered column to find out more information about that butterfly at the U.S. Fish & Wildlife Service website

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