Yoshinori Imaizumi is known for describing a subspecies that has been listed as critically endangered on the IUCN Red List since which year ?
Yoshinori Imaizumi: Yoshinori Imaizumi (今泉吉典 , Imaizumi Yoshinori , March 11, 1914 – April 2, 2007) was a Japanese zoologist. Yoshinori Imaizumi:  He is known for describing the Iriomote cat in 1967. Iriomote cat:  It has been listed as critically endangered on the IUCN Red List since 2008, as the only population comprises fewer than 250 adult individuals and is considered declining.
2008