''Favonius orientalis'' is an East

Palearctic The Palearctic or Palaearctic is a biogeographic realm of the Earth, the largest of eight. Confined almost entirely to the Eastern Hemisphere, it stretches across Europe and Asia, north of the foothills of the Himalayas, and North Africa. Th ...

species of

hairstreak The subfamily Theclinae is a group of butterflies, often referred to as hairstreaks, with some species instead known as elfins or by other names. The group is part of the family Lycaenidae, the "gossamer-winged butterflies". There are many tro ...

butterfly Butterflies are winged insects from the lepidopteran superfamily Papilionoidea, characterized by large, often brightly coloured wings that often fold together when at rest, and a conspicuous, fluttering flight. The oldest butterfly fossi ...

found in China, Amur, Ussuri, Kunashir, Japan, and Korea. The larva feeds on ''

Quercus mongolica ''Quercus mongolica'', commonly known as Mongolian oak, is a species of oak native to Japan, China, Korea, Mongolia, and Siberia. The species can grow to be tall. The flavono-ellagitannins mongolicin A and B can be found in ''Quercus mongo ...

'', ''

Quercus serrata ''Quercus serrata'', the jolcham oak (, Japanese: ), is an East Asian species of tree in the beech family. It is native to China, Taiwan, Japan, and Korea. Description ''Quercus serrata'' is a deciduous oak tree reaching a height of occupying ...

'', ''

Quercus dentata ''Quercus dentata'', also called Japanese emperor oak, daimyo oak, or Korean oak (, ''kashiwa''; ; , ''tteokgalnamu''), is a species of oak native to East Asia (Japan, Korea and China). The name of the tree is often translated as "sweet oak" in ...

'', ''

Quercus acutissima ''Quercus acutissima'', the sawtooth oak, is an Asian species of oak native to China, Tibet, Korea, Japan, Taiwan, Siberia, Mongolia, Bangladesh, Philippines, Indonesia, Malaysia, India, Pakistan, Sri Lanka, Brunei, Indochina (Vietnam, Thailand, ...

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Quercus variabilis ''Quercus variabilis'', the Chinese cork oak, is a species of oak in the section ''Quercus'' sect. ''Cerris'', native to a wide area of eastern Asia in southern, central, and eastern China, Taiwan, Japan, and Korea. Description ''Quercus variab ...

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Fabaceae Fabaceae () or Leguminosae,International Code of Nomen ...

."''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

Theclini Butterflies described in 1875 Taxa named by Richard Paget Murray Butterflies of Asia {{Lycaenidae-stub