Simyra nervosa
Simyra nervosa
Simyra nervosa, also called oblique wing Striemeneule or White Grey Schrägflügeleule, [Note 1] is a butterfly (moth ) from the family of cutworms ( Noctuidae ).
- 5.1 Notes and references
- 5.2 Literature
Features
The moths belong, with a wingspan of about 32 to 36 millimeters of the smaller species of owls. Head and thorax are yellowish -gray or brownish gray, the abdomen gray. Particularly striking is the extremely pointed apex. The ground color varies from white through gray gray yellow to brown yellow and brown gray. There are no transverse lines or blemishes present. The fringes are white or yellow. The veins of the fore wings stand out striemen like and are partially edged in gray. The wings act dusted gray. The hind wings are solid white to light gray. The underside is solid white or light gray. Characteristic of the males are the sides combed sensor.
The egg has the shape of a flat cone, has strong, slightly irregular ribs, is bright red in color and provided with numerous small yellowish white spots.
The caterpillar has a yellow-white color, a broad, dark brown back and brown stripe side stripes, where sit the red stigmas. The head is reddish yellow with a notched apex. Remarkable are the red and yellow button warts that are provided with relatively long, white or yellow hair.
The doll is colored reddish brown.
Similar Species
A degree of similarity to the following species slightly larger:
- Ried- Weißstriemeneule ( Simyra albovenosa ). Their front wings are wider and show more or less pronounced stripes.
- Narrow- leafed Schilfeule ( Chilodes maritima ). The front wing shape is square in this species. On the outer transverse line dark spots are visible. Occasionally, out ring and kidney blemish.
- Welts - Schilfeule ( Senta flammea ). In the middle of the front wing is a dark longitudinal line.
All of the above species inhabit mainly reeds and wetlands so that their habitats do not overlap with those of nervosa, the dry regions of preferred.
Geographical distribution and habitat
The species has a very extensive distribution area, which extends from the eastern half of the Iberian Peninsula, large parts of France, south-east of England, through large parts of Central Europe, Eastern Europe, Asia Minor, the Caucasus, Iran, Afghanistan, Siberia, Kazakhstan to Mongolia. In the south it extends to the south of Spain, Sicily and northern Greece, in the north to Scandinavia; here the regions around the Baltic Sea are almost completely populated. However, the incidence in Western, Central and Southern Europe are very fragmented, you can refer to them as relic deposits. In Eastern Europe and Western Asia, area of distribution, however, is still largely contiguous.
The animals prefer to live on loess, clay and marl soils in warm dry areas of flat and hilly land, and steppe areas. Because of this occurrence, the species was formerly known as Lößsteppen - Striemeneule.
Way of life
Simyra nervosa forms annually in Central Europe two generations. The moths of the first generation fly in April and May, the second generation in July and August. In the north of its range only one generation is formed. The moths are nocturnal and come to artificial light sources.
The caterpillars of the first generation can be found mainly in August and September, those of the second generation mainly in June. They feed mainly on the leaves of spurge ( Euphorbiaceae ). However, they are also found on other food plants belonging to the plant families Knöterichgewächsen ( Polygonaceae ) (eg, dock), plumbago plants ( Plumbaginaceae ), Crassula family ( Crassulaceae ), Flax ( Linaceae ), Daisy Family ( Asteraceae), Rushes ( Juncaceae ) and grasses ( Poaceae ) belong. The pupa overwinters.
Endangering
The species occurs in Germany only very locally before, missing area, all or has been lost and is out on the red list of endangered species in category 1 ( threatened with extinction ).