Favonius orientalis is an East Palearctic species of hairstreak butterfly found in China, Amur, Ussuri, Kunashir, Japan, and Korea.
The larva feeds on Quercus mongolica, Quercus serrata, Quercus dentata, Quercus acutissima, Quercus variabilis and Fabaceae."Favonius Sibatani & Ito, 1942" at Markku Savela's Lepidoptera and Some Other Life Forms
Subspecies F. o. orientalis (Honshu) F. o. shirozui Murayama, 1956 (Hokkaido) F. o. schischkini Kurentzov, 1970 (Amur, Ussuri, Kunashir)
References