''Oberthueria falcigera'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

in the family

Endromidae Endromidae is a family of moths. It was long considered to be a monotypic family, containing just one species, the Kentish glory, '' Endromis versicolora'', found throughout the Palaearctic regio The family now consists of several genera and abou ...

. It is found in

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 ...

(Hokkaido, Honshu, Shikoku, Kyushu). The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan of ...

is 38–46 mm. Adults have a dark ground colour, varying from very dark dusty yellowish grey to smoky brown or greyish brown. The wing pattern is darker and sometimes hardly visible. The submarginal field of the forewings is sometimes suffused with greyish-brown scales. There are orange scales on the hindwings. Adults are on wing from June to late August, probably in two generations per year. The larvae feed on '' Acer'' and ''

Quercus An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably '' ...

'' species. They have a peculiar cobra-like thorax and a long anal horn.Immature Stages of Four Bombycidae Species of Taiwan

References

Moths described in 1878 Oberthueria (moth) Moths of Japan {{Bombycoidea-stub