Increase in the number of Endangered Butterfly species in Japan from 1991 to 2012

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  • 日本における1991年から2012年までの絶滅危惧チョウ類の増加

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We surveyed the changes in the numbers of endangered species of Japanese butterflies from 1991 to 2012 on the basis of the Red Data Book and the Red List published by the Ministry of Environment. Total 47 butterflies were red listed in 1991, increasing to 91 species (including subspecies) in 2012. The rate of critically endangered (CR) and endangered (EN) species was the highest for butterflies (from two species in 1991 to 30 in 2012) in other category species. Thirty-seven species of the Lycaeidae family are currently included in the Red List (40.7%). Thirty species (42.3%) of the 71 butterfly species (not including sub-species) in the Japanese Red List are found in Korea. From all the Red List butterflies, 50.5% are grassland species.

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