''Favonius taxila'' is a

butterfly Butterflies are insects in the macrolepidopteran clade Rhopalocera from the Order (biology), order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The ...

in the family

Lycaenidae Lycaenidae is the second-largest family of butterflies (behind Nymphalidae, brush-footed butterflies), with over 6,000 species worldwide, whose members are also called gossamer-winged butterflies. They constitute about 30% of the known butterfl ...

. It is found in the

Russian Far East The Russian Far East (russian: Дальний Восток России, r=Dal'niy Vostok Rossii, p=ˈdalʲnʲɪj vɐˈstok rɐˈsʲiɪ) is a region in Northeast Asia. It is the easternmost part of Russia and the Asian continent; and is admini ...

, north-eastern

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

Korea Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...

and

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. The length of the front wing of butterflies is 17-20 mm . Females are slightly larger than males. The upper side of the wings of males is emerald green and shiny. There is a dark border on the front wing. On the front wing it is very narrow, about 0.5 mm wide, on the hind wing it is 2-2.5 mm wide. Hind wings with a tail, the length of which reaches about 4 mm. The color of the upper side of the female's wings is brown-brown with a blurred light spot on the front wing. The undersides of the wings are yellowish-gray in both sexes. The white transverse stripe on the underside of the wings is distinct, at the anterior edge of the forewing it bends towards the apex of the wing. The narrow spot at the top of the central cell is practically invisible. On the hind wing, an additional small spot adjoins the orange spot with a black pupil. ''ultramarina'' Fixs., from Corea, has more bluish golden gloss above. — ''japonica'' Murr. is the largest form and has the strongest golden gloss of all; Japan. In ab. ''fasciata'' Jans. the hindmargin of the forewing above is coppery. — ''regina'' Btlr. has a light cobalt-blue sheen. Seitz, A. ed. Band 1: Abt. 1, ''Die Großschmetterlinge des palaearktischen Faunengebietes, Die palaearktischen Tagfalter'', 1909, 379 Seiten, mit 89 kolorierten Tafeln (3470 Figuren)

Subspecies

* ''Favonius taxila taxila'' (Amur, Ussuri,

: Hokkaido) * ''Favonius taxila xinlongensis'' Murayama, 1991 (Central

) File:105-Favonius taxila.JPG , male File:106-Favonius taxila.JPG , female

References

Butterflies described in 1861 Theclini Butterflies of Asia Taxa named by Otto Vasilievich Bremer {{Lycaenidae-stub