''Tetheella'' is a

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

moth genus in the family

Drepanidae The Drepanidae are a family of moths with about 660 species described worldwide. They are generally divided in three subfamilies) which share the same type of hearing organ. Thyatirinae, previously often placed in their own family, bear a super ...

described by Werny in 1966. Its single species, ''Tetheella fluctuosa'', the satin lutestring, was described by

Jacob Hübner Jacob Hübner (20 June 1761 – 13 September 1826, in Augsburg) was a German entomologist. He was the author of ''Sammlung Europäischer Schmetterlinge'' (1796–1805), a founding work of entomology. Scientific career Hübner was the author of '' ...

in 1803. It is found from western Europe across the

Palearctic The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Sibe ...

Kamchatka The Kamchatka Peninsula (russian: полуостров Камчатка, Poluostrov Kamchatka, ) is a peninsula in the Russian Far East, with an area of about . The Pacific Ocean and the Sea of Okhotsk make up the peninsula's eastern and wes ...

Sakhalin Island Sakhalin ( rus, Сахали́н, r=Sakhalín, p=səxɐˈlʲin; ja, 樺太 ''Karafuto''; zh, c=, p=Kùyèdǎo, s=库页岛, t=庫頁島; Manchu: ᠰᠠᡥᠠᠯᡳᠶᠠᠨ, ''Sahaliyan''; Orok: Бугата на̄, ''Bugata nā''; Nivkh: ...

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

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 35–38 mm. The forewings are light fuscous, white- sprinkled .The first line is whitish, limiting a broad darker central band including dark fuscous median and second lines, followed by a whitish dark-edged waved line. The subterminal is whitish, waved, preceded on the costa by an oblique dark fuscous dash. The hindwings are grey, with a pale postmedian line. The larva is yellow whitish; dorsal, fine subdorsal, and lateral lines fuscous; head reddish-ochreous, brown-marked.Meyrick, E., 1895 ''A Handbook of British Lepidoptera'' MacMillan, Londo
pdf
Keys and description The moth flies from June to August depending on the location. The larvae feed on

birch A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 ...

and

alder Alders are trees comprising the genus ''Alnus'' in the birch family Betulaceae. The genus comprises about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few sp ...

Subspecies

*''Tetheella fluctuosa fluctuosa'' *''Tetheella fluctuosa isshikii'' (Matsumura, 1921) (Russian Far East, north-eastern and northern China, Korea, Japan)

References

External links

Satin Lutestring at ''UKMoths''
* ttp://www.lepiforum.de/cgi-bin/lepiwiki.pl?Tetheella_Fluctuosa ''Lepiforum.de'' Moths described in 1803 Thyatirinae Drepanid moths of Great Britain Moths of Japan Moths of Europe Taxa named by Jacob Hübner {{Thyatirinae-stub