''Antheraea yamamai'', the Japanese silk moth or Japanese oak silkmoth (

Japanese Japanese may refer to: * Something from or related to Japan, an island country in East Asia * Japanese language, spoken mainly in Japan * Japanese people, the ethnic group that identifies with Japan through ancestry or culture ** Japanese diaspor ...

: or ) 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 ...

of the family

Saturniidae Saturniidae, commonly known as saturniids, is a family of Lepidoptera with an estimated 2,300 described species. The family contains some of the largest species of moths in the world. Notable members include the emperor moths, royal moths, and gi ...

. It is endemic to east Asia, but has been imported to Europe for

tussar silk Tussar silk (alternatively spelled as tussah, tushar, tassar, tussore, tasar, tussur, or tusser, and also known as (Sanskrit) ''kosa'' silk) is produced from larvae of several species of silkworms belonging to the moth genus ''Antheraea'', inclu ...

production and is now found in southeastern Europe, mainly in

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

, northeastern

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

, and the

Balkans The Balkans ( ), also known as the Balkan Peninsula, is a geographical area in southeastern Europe with various geographical and historical definitions. The region takes its name from the Balkan Mountains that stretch throughout the who ...

. It seems to be spreading north and a population has been reported near

Deggendorf Deggendorf () is a town in Bavaria, Germany, capital of the Deggendorf district. It is located on the left bank approximately in the middle between the Danube cities of Regensburg and Passau. The Danube forms the town's natural border towards th ...

and

Passau Passau (; bar, label=Central Bavarian, Båssa) is a city in Lower Bavaria, Germany, also known as the Dreiflüssestadt ("City of Three Rivers") as the river Danube is joined by the Inn from the south and the Ilz from the north. Passau's popu ...

in Germany. The species was first described by

Félix Édouard Guérin-Méneville Félix Édouard Guérin-Méneville, also known as F. E. Guerin, (12 October 1799, in Toulon – 26 January 1874, in Paris) was a French entomologist. Life and work Guérin-Méneville changed his surname from Guérin in 1836. He was the author of ...

in 1861. It has been hybridized artificially with ''

Antheraea polyphemus ''Antheraea polyphemus'', the Polyphemus moth, is a North American member of the family Saturniidae, the giant silk moths. It is a tan-colored moth, with an average wingspan of 15 cm (6 in). The most notable feature of the moth is its ...

'' of North America. This moth has been cultivated 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 ...

for more than 1000 years. It produces a naturally white silk that is very strong and elastic, but does not dye well. It is now very rare and expensive. 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 . Adults are on wing from August to September in one generation depending on the location. The larva mainly feed on ''

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, but have also been reported on ''

Fagus sylvatica ''Fagus sylvatica'', the European beech or common beech is a deciduous tree belonging to the beech family Fagaceae. Description ''Fagus sylvatica'' is a large tree, capable of reaching heights of up to tall and trunk diameter, though mor ...

'', ''

Castanea sativa ''Castanea sativa'', the sweet chestnut, Spanish chestnut or just chestnut, is a species of tree in the family Fagaceae, native to Southern Europe and Asia Minor, and widely cultivated throughout the temperate world. A substantial, long-lived ...

'', ''

Carpinus Hornbeams are hardwood trees in the flowering plant genus ''Carpinus'' in the birch family Betulaceae. The 30–40 species occur across much of the temperate regions of the Northern Hemisphere. Origin of names The common English name ''hornbeam' ...

'', ''

Rosa Rosa or De Rosa may refer to: People *Rosa (given name) * Rosa (surname) *Santa Rosa (female given name from Latin-a latinized variant of Rose) Places *223 Rosa, an asteroid *Rosa, Alabama, a town, United States * Rosa, Germany, in Thuringia, G ...

'', and ''

Crataegus ''Crataegus'' (), commonly called hawthorn, quickthorn, thornapple, Voss, E. G. 1985. ''Michigan Flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state. Part II: Dicots (Saururaceae–Cornacea ...

''. In order to look at the tensan silk genes in more detail a ''de novo'' genome and set of transcriptomes have been sequenced, producing a 700Mb reference with 15,481 genes.

Subspecies

*''Antheraea yamamai yamamai'' *''Antheraea yamamai bergmani'' Bryk, 1949 *''Antheraea yamamai titan'' Mell, 1958 *''Antheraea yamamai ussuriensis'' Schachbazov, 1953 *''Antheraea yamamai superba'' Inoue, 1964 (Taiwan)

References

External links

Taxonomy
''Fauna Europaea''
''Lepiforum e.V.''
yamamai Moths of Asia Moths of Europe Moths described in 1861 Sericulture {{Saturniidae-stub