''Thymelicus sylvatica'' is an eastern

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 ...

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 ...

in the

Hesperiidae Skippers are a group of butterflies placed in the family Hesperiidae within the order Lepidoptera (moths and butterflies). They were previously placed in a separate superfamily, Hesperioidea, but have since been placed in the superfamily Papilion ...

(

Hesperiinae Grass skippers or banded skippers are butterflies of the subfamily Hesperiinae, part of the skipper family, Hesperiidae. The subfamily was established by Pierre André Latreille in 1809. Description and distribution With over 2,000 described sp ...

). The species can be found in Amur, Ussuri,

southwest China Southwestern China () is a region in the People's Republic of China. It consists of five provincial administrative regions, namely Chongqing, Sichuan, Guizhou, Yunnan, and Xizang. Geography Southwestern China is a rugged and mountainous region, ...

, Korea, and Japan. The larva feeds on ''

Calamagrostis ''Calamagrostis'' (reed grass or smallweed) is a genus of flowering plants in the grass family Poaceae, with about 260 species that occur mainly in temperate regions of the globe. Towards equatorial latitudes, species of ''Calamagrostis'' general ...

'', ''

Bromus ''Bromus'' is a large genus of grasses, classified in its own tribe Bromeae. They are commonly known as bromes, brome grasses, cheat grasses, or chess grasses. Estimates in the scientific literature of the number of species have ranged from 100 ...

'', ''

Agropyron ''Agropyron'' is a genus of Eurasian plants in the grass family), native to Europe and Asia but widely naturalized in North America. Species in the genus are commonly referred to as wheatgrass. ; Species * '' Agropyron badamense'' - Tajikistan ...

'', ''

Brachypodium ''Brachypodium'' is a genus of plants in the grass family, widespread across much of Africa, Eurasia, and Latin America. The genus is classified in its own tribe Brachypodieae. Flimsy upright stems form tussocks. Flowers appear in compact spi ...

'', ''

Carex ''Carex'' is a vast genus of over 2,000 species of grass-like plants in the family (biology), family Cyperaceae, commonly known as sedges (or seg, in older books). Other members of the family Cyperaceae are also called sedges, however those of ge ...

''.

Subspecies

*''T. s. sylvatica'' *''T. s. astigmatus'' (Leech, 1894) (Chang Yang) *''T. s. teneprosus'' (Leech, 1894) *''T. s. occidentalis'' (Leech, 1894) (Ta Chien Lou) *''T. s. nishimurai'' Hamada et Fujioka, 1997

References

Hesperiinae Butterflies described in 1861 Butterflies of Asia Taxa named by Otto Vasilievich Bremer {{Hesperiidae-stub