Hyppa rectilinea

Blueberry Stricheule ( Hyppa rectilinea )

The blueberry Stricheule ( Hyppa rectilinea ), also blueberry forest Stricheule, Stricheule called blueberry Krauteule is a butterfly (moth ) from the family of cutworms ( Noctuidae ).

Features

The wingspan of the butterfly is 33 to 41 millimeters. The forewings have strong contrasts. While the midfield is colored predominantly dark brown, the drawing elements in the root and in Saumfeld of whitish-gray color. The inner transverse line is very strongly serrated. Ring and kidney blemish are colored light gray, lift often but dimly from. Striking is a large, whitish W in the wave line. For the kind of characteristic are a broad dark Wurzelstrieme and some black lines in the Submarginalregion. The hind wings are gray-brown colored zeichnungsarm.

Adults caterpillars vary dark yellow to reddish brown. The back line is narrow, the side ridge lines are drawn only indistinctly. The side strips are narrow, whitish colored with a wavy upper limit. On the 8th abdominal segment the side line is enlarged into a broad, yellow spot. On the back of dark diamond-shaped spots are formed.

The slim doll is brown in color. The cremaster is staffed with two spines.

Geographical distribution and habitat

The species occurs in Europe from Scotland in the west over Central and Northern Europe and Southern Europe in fragmented areas, especially in the mountains before. In France, the kind mainly to the Vosges and the limited with the exception of isolated occurrences in the Ardennes, Massif Central and the Pyrenees, the Alps areas. Further east, extends the distribution area through Siberia and Eastern Siberia to the Pacific.

The blueberry Stricheule preferred coniferous forests, marshy heaths and raised bogs.

Way of life

The blueberry Stricheule is one generation per year. The moths fly from late May to early August. The moths are nocturnal and appear to artificial sources of light and love to bait. Eggs are laid singly or in small groups on the leaves of the caterpillar food plants. The caterpillars are nocturnal and feed preferably on blueberries (Vaccinium myrtillus), bog bilberry (Vaccinium uliginosum ) and other blueberry (Vaccinium ), blackberry (Rubus ) or species of willow ( Salix). They overwinter in a Hibernarium on the ground and pupate until the following spring. The pupal period lasts about three weeks. In breeding, the caterpillar can also develop without wintering on.

Endangering

In Germany, the blueberry Stricheule comes in different number and is guided on the red list of endangered species on the early warning list.

Swell

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