Euxoa cursoria
Euxoa ( Euxoa ) cursoria
Euxoa cursoria, including Mutable Dune Erdeule Brown or Powdered called Erdeule, is a butterfly (moth ) from the family of cutworms ( Noctuidae ).
- 6.1 Notes and references
- 6.2 Literature
Features
The wingspan of the butterfly is 31 to 40 millimeters. The coloration of the forewing varies in different shades of brown to dark brown from yellow brown to beige to. Ring and kidney blemish are light brown, whitish edged, clearly highlighted and show in the middle of a dark brown filled Diskoidalzelle. The Saumfeld is usually brightened and the transverse lines are perforated. For darker copies the drawing is sometimes less pronounced and slightly blurred. The hind wings have a whitish-gray to gray-brown color.
The reddish egg is small, approximately spherical and only slightly flattened at the bottom. The surface is finely ribbed and has a net-like pattern. The caterpillars have a gray -brown to greenish color. They have two fine ridge lines, bright side stripes and dark spot warts. The head and pronotum are yellow brown and shiny. The bright red doll has a shiny surface.
Similar Species
The lighter forms of Euxoa cursoria are hardly to be confused, however, resemble the darker individuals some other species, such as Euxoa ochrogaster ssp. rossica, Euxoa nigricans, Spaelotis Ravida and others. In all of these flaws, however, are usually the less clear edged.
Geographical distribution and habitat
The species occurs in northern Europe including the British Isles, mainly in coastal areas. It is also found in North-West Russia, Siberia, Afghanistan, Mongolia and Tibet. By involving wirima Hardwick, 1965 as subspecies, Euxoa cursoria has a Holarctic distribution. It prefers sandy grassland and beach areas.
Way of life
Euxoa cursoria is one generation per year. The nocturnal moths fly from early July to mid-September. They come to artificial light sources and also visit the bait. The caterpillars feed mainly on the roots and lower leaves of several herbaceous plants and grasses. They overwinter and pupate in June of the following year. The species is occasionally a pest of asparagus (Asparagus ).
Endangering
Euxoa cursoria comes in Germany in the northern federal states, there is usually rare and therefore on the Red List of endangered species in Category 2 ( high risk ) classified.
System
The genus Euxoa is broken down by Fibiger (1990 ) into four subgenera. It represents the kind in the Nominatuntergattung Euxoa ( Euxoa ) Hübner, 1821. In a correction to the first volume of the Noctuidae Europaea he represents the partially regarded as an independent species Euxoa Virima Hardwick, 1965 as a subspecies of Euxoa cursoria.