Ocneria detrita
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Rußspinner, Illustration from Esper 1782
The Rußspinner ( Ocneria detrita, Syn: Parocneria detrita ) is a butterfly of the subfamily of Trägspinner ( Lymantriinae ) which is widely used in France, Italy, parts of Central Europe, South-Eastern and Eastern Europe.
Features
While the color of the male is brown gray and they have an irregular, thin, darker transverse line, the females are slightly darker than the males and without markings. The wingspan is 30-34 mm.
The caterpillars have a dark blue-gray almost black color and a white dorsal line. On 9 and 10 segment are located on top of red haired warts. A little side are black gray hairy warts, and even a series of deep warts are orange. About the feet are gray warts. The spiracles are black and the abdominal legs reddish gray. The roundish head has the same color as the body and is also the same as this dusted whitish.
The species spends about three weeks in her black doll, with green and brown tufts of hair, which is located in a loose cocoon.
Way of life
The moths fly in one generation from early June to late September and overwinter as half-grown caterpillars. This feed almost only of oak (Quercus ). Therefore, the species occurs mainly in oak forests.