Piebald bark tensioner
| Piebald bark tensioner | ||||||||||||
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Spotted cortex ( Fagivorina arenaria ) |
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| Scientific name | ||||||||||||
| Fagivorina arenaria | ||||||||||||
| ( Hufnagel , 1767) |
The piebald bark tensioner ( Fagivorina arenaria ), also called piebald oak-beech bark tensioner or beech -beech bark tensioner , is a butterfly ( moth ) from the tensioner family (Geometridae).
features
butterfly
With a wingspan of 22 to 30 millimeters, the moths are one of the smaller species of cortex. The whitish front wings show a very high-contrast blackish pollination. The middle shadow and the inner transverse line in particular are heavily darkened. Some drawing elements can also take on reddish or brownish tones. The fringes are checked in black and white. Two or three dark spots on the inner edge of the hind wings are characteristic. Its hem contains some crescent-shaped drawing elements. In addition, there is an indistinct center line and a weakly indicated center point. The antennae of the males are strongly combed on both sides, those of the females are thread-shaped.
Egg, caterpillar, pupa
The egg is initially colored solid green and later also takes on a reddish dot. It has an oval shape and honeycomb-like, shallow depressions on the surface.
Adult caterpillars are gray-brown or red-brown in color. On the second segment, weakly developed, lateral cusps can be seen, and black back cusps at the fifth. There are bright angular signs on the back as well as in the front and rear areas.
The red-brown doll has two diverging tips on the elongated cremaster .
Similar species
The butterflies are unmistakable due to the very distinctive drawing.
Geographical distribution and occurrence
The distribution area of the Scheckigen Rindenspanner extends through large parts of Central Europe to the Balkans and the Ukraine . In the south it occurs to Sicily , in the north to Sweden and Norway. In the Alps , it rises to an altitude of 1500 meters. The species prefers beech forests or mixed forests.
Way of life
The moths are nocturnal and fly to artificial light sources and sometimes bait . The main flight time is from May to July. The caterpillars live from July to September primarily on common beech ( Fagus sylvatica ), occasionally also on oaks ( Quercus ) or other deciduous trees. The pupae overwinter.
Danger
The species occurs in different numbers in the German federal states, is mostly very rare, is considered to be lost in certain areas and is therefore classified in category 1 (threatened with extinction) on the Red List of Threatened Species .
swell
Individual evidence
- ^ A b Walter Forster, Theodor A. Wohlfahrt: The butterflies of Central Europe. Volume 5: Spanner. (Geometridae). Franckh'sche Verlagshandlung, Stuttgart 1981, ISBN 3-440-04951-5 .
- ↑ a b Günter Ebert (Ed.): The butterflies of Baden-Württemberg. Volume 9. Moths VII. Geometridae 2nd part . 1st edition. Ulmer, Stuttgart (Hohenheim) 2003, ISBN 3-8001-3279-6 .
- ↑ Peder Skou: The geometroid moths of North Europe (Lepidoptera, Drepanidae, Geometridae) . Scandinavian Science Press, 1986
- ↑ Federal Agency for Nature Conservation (Ed.): Red List of Endangered Animals in Germany . Landwirtschaftsverlag, Münster 1998, ISBN 3-89624-110-9 .
literature
- Günter Ebert (Ed.): The butterflies of Baden-Württemberg. Volume 9. Moths VII. Geometridae 2nd part . 1st edition. Ulmer, Stuttgart (Hohenheim) 2003, ISBN 3-8001-3279-6 .
- Walter Forster , Theodor A. Wohlfahrt : The butterflies of Central Europe. Volume 5: Spanner. (Geometridae). Franckh'sche Verlagshandlung, Stuttgart 1981, ISBN 3-440-04951-5 .
- Manfred Koch , Wolfgang Heinicke, Bernd Müller: We determine butterflies. Volume 4: Spanner. 2nd, improved and enlarged edition. Neumann, Leipzig / Radebeul 1976, DNB 780451570 .
Web links
- www.Lepiforum e. V. Taxonomy and Photos
- www.schmetterlinge-deutschlands.de Endangerment
- Fagivorina arenaria in Fauna Europaea. Retrieved July 4, 2012