This is a list of recently extinct butterflies, their former ranges, and dates of extinction.
The Xerces blue is a recently extinct species of butterfly in the gossamer-winged butterfly family, Lycaenidae. The species lived in coastal sand dunes of the Sunset District of the San Francisco Peninsula in California. The Xerces blue is believed to be the first American butterfly species to become extinct as a result of loss of habitat caused by urban development. The last Xerces blue was seen in 1941 or 1943 on land that is now part of the Golden Gate National Recreation Area.
Phengaris alcon, the Alcon blue or Alcon large blue, is a butterfly of the family Lycaenidae and is found in Europe and across the Palearctic to Siberia and Mongolia.
Sevan National Park is one of the four protected national parks of Armenia, founded in 1978 to protect Lake Sevan and the surrounding areas. It is under the jurisdiction of the Ministry of Environment and includes a research center, which monitors the ecosystems, and undertakes various conservation measures. Licensed fishing on the lake is also regulated.
Deloneura immaculata, the Mbashe River buff, is a possibly extinct species of butterfly in the family Lycaenidae. It is assumed to be endemic to the densely forested Mbhashe River area of the Eastern Cape, South Africa. Searches subsequent to its discovery however failed to yield any trace of it.
Lepidochrysops titei, the Tite's blue, is a species of butterfly in the family Lycaenidae. It is endemic to South Africa, where it is found in the Western Cape.
The greater large blue is a species of butterfly in the family Lycaenidae.
The dusky large blue is a species of butterfly in the family Lycaenidae. It is found in Armenia, Austria, Azerbaijan, Belarus, Bulgaria, Czech Republic, France, Georgia, Germany, Hungary, Kazakhstan, Moldova, Montenegro, the Netherlands, Poland, Romania, Russia, Slovenia, Spain, Switzerland, and Ukraine.
Phengaris rebeli, common name mountain Alcon blue, is a species of butterfly in the family Lycaenidae. It was first found and described in Styria, Austria, on Mount Hochschwab around 1700. Although it was initially classified as a subspecies of P. alcon, a European researcher, Lucien A. Berger, designated it as a separate species in 1946. Genetic similarities between P. rebeli and P. alcon have led many researchers to argue that the two are the same species and differences are due to intraspecific variation.
Libythea cinyras was a species of butterfly in the nymphalid subfamily Libytheinae. It is now thought to be extinct. It was endemic to Mauritius. The only known specimen is the holotype.