Evergestis extimalis
Rübsaatpfeifer ( Evergestis extimalis ), copy with very well-marked cross lines
The Rübsaatpfeifer ( Evergestis extimalis ), also called Rübsaatzünsler, is a butterfly of the family Crambidae. The species is widespread eurasienweit.
Features
The moths reach a wingspan of 22-28 millimeters. The front wings are bright yellow, the outer part of Saumfeldes is dark brown, the fringes are gray-brown. From the Apex is a broad, very fuzzy, brown Apikalstrich goes out. About the wings extend two brown, jagged up corrugated transverse lines, which are often resolved into a series of fine wire points. In Basalfeld sometimes are two brown spots of unequal size. Between the inner and outer transverse line a dark- edged kidney blemish is usually configured. The hind wings are whitish with an ill-defined, dark brown hemline and drab fringe.
The yellow-green caterpillar has a black head and black warts on the dorsal side of both sides of the broad and yellow back line. The pupa is reddish brown.
Way of life
Evergestis extimalis forms per year in southern Europe, of two generations who fly from May to October. In Northern Europe, only a generation is formed, which flies from June to August. The oligophagen caterpillars live singly or in groups in loose cocoons spun together scion shoots of various cruciferous plants. They eat the seeds of rauks ( Sisymbrium ), cabbage (Brassica ), radish (Raphanus ), Turritis, gray cress ( Berteroa incana ), Schmalblättrigem double seeds ( Diplotaxis tenuifolia ), Iberis pinnata, bitter candytuft ( Iberis amara ), garden - Senfrauke ( Eruca sativa), mustard Nacktstängeligem Bauer ( Teesdalia nudicaulis ), water - cress ( Rorippa amphibia ), and field Hellerkraut ( Thlaspi arvense). The caterpillars overwinter and pupate until the following spring in or on the earth, rare in pods.
Occurrence
The species is widespread in Europe, with the exception of northern Scandinavia and northern Russia. She comes over Russia, before Minor and Central Asia over southern Siberia to Japan. In open landscapes and agricultural areas, it occurs relatively frequently.