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''Rivula sericealis'', the straw dot, 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 ...
of the family
Noctuidae The Noctuidae, commonly known as owlet moths, cutworms or armyworms, are a family of moths. They are considered the most controversial family in the superfamily Noctuoidea because many of the clades are constantly changing, along with the othe ...
. The species was first described by
Giovanni Antonio Scopoli Giovanni Antonio Scopoli (sometimes Latinized as Johannes Antonius Scopolius) (3 June 1723 – 8 May 1788) was an Italian physician and naturalist. His biographer Otto Guglia named him the "first anational European" and the "Linnaeus of the Au ...
in his 1763 ''
Entomologia Carniolica ' is a taxonomic work by Giovanni Antonio Scopoli, published in Vienna in 1763. As well as describing hundreds of new species, ' contained observations on the species' biology, including the first published account of queen bees mating outside the ...
''. It is found in Europe including the
Iberian Peninsula The Iberian Peninsula (), ** * Aragonese and Occitan: ''Peninsula Iberica'' ** ** * french: Péninsule Ibérique * mwl, Península Eibérica * eu, Iberiar penintsula also known as Iberia, is a peninsula in southwestern Europe, defi ...
and southern
Fennoscandia __NOTOC__ Fennoscandia ( Finnish, Swedish and no, Fennoskandia, nocat=1; russian: Фенноскандия, Fennoskandiya) or the Fennoscandian Peninsula is the geographical peninsula in Europe, which includes the Scandinavian and Kola penins ...
and south to
North Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in t ...
. In an easterly direction, the species occurs 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-Si ...
to the Pacific Ocean and Japan. The species closely resembles '' Evergestis forficalis''.


Technical description and variation

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 ...
is 18–22 mm. The length of the forewings is 13–15 mm. Forewing triangular, the apex rectangular, the termen curved; veins 7, 8, 9 stalked. Forewing straw yellow, becoming deeper terminally; with a black-brown reniform stigma containing two black dots; inner and outer lines brownish, obscure, the outer sinuous, excurved round the cell; hindwing luteous (mud coloured) with a yellow tinge, darker terminally.Seitz, A. Ed., 1914 ''Die Großschmetterlinge der Erde'', Verlag Alfred Kernen, Stuttgart Band 3: Abt. 1, Die Großschmetterlinge des palaearktischen Faunengebietes, Die palaearktischen eulenartigen Nachtfalter, 1914


Biology

The moth flies from May to October depending on the location. Larva green; dorsal line darker; subdorsal white; head greenish ochreous. The larvae feed on various grasses, such as
false brome ''Brachypodium sylvaticum'', commonly known as false-brome, slender false brome or wood false brome, is a perennial grass native to Europe, Asia and Africa. It has a broad native range stretching from North Africa to Eurasia. The bunchgrass is ...
and
purple moor grass ''Molinia caerulea'', known by the common name purple moor-grass, is a species of grass that is native to Europe, west Asia, and north Africa. It grows in locations from the lowlands up to in the Alps. Like most grasses, it grows best in acid ...
. Habitats include moist grasslands, wasteland, sparse forests, alder forests and parklands. Rivula sericealis larva.jpg, Larva Buckler W The larvæ of the British butterflies and moths PlateCXLVIII.jpg , Illustration Figs. 4, 4a, 4b the same larva in various stages of growth 4c pupa 4d much magnified figure of 4 Rivula.sericealis.7194.jpg Rivula sericealis SLU.JPG, Museum specimen


References


External links

*
"''Rivula sericealis'' (Scopoli, 1763)"
''Fauna Europaea''. Retrieved 15 February 2020.
"09008 ''Rivula sericealis'' (Scopoli, 1763) - Seideneulchen"
''Lepiforum e. V.'' Retrieved 15 February 2020. Rivulinae Moths described in 1763 Moths of Africa Moths of Asia Moths of Europe Moths of Japan Taxa named by Giovanni Antonio Scopoli {{Rivulinae-stub