Black-lined broom spanner
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Black- lined broom spanner ( Isturgia limbaria ) |
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| Isturgia limbaria | ||||||||||||
| ( Fabricius , 1775) |
The black-fringed broom spanner ( Isturgia limbaria ), also known as the yellow gorse spanner or yellow broom spanner , is a butterfly ( moth ) from the spanner family (Geometridae).
features
butterfly
The moths reach a wingspan of 22 to 28 millimeters. The front wings are yellow or orange-yellow in color and have little dark pollination. They have an eponymous black border. At the front edge there is a weak, fuzzy, thin black line. The hind wings are lightly blackened and have a blurred black band. The white longitudinal stripes on the underside of the hind wings are striking. When in the southeastern alps flying ssp. rablensis , these stripes are somewhat weaker. The antennae of the males are combed, those of the females are thread-like.
egg
The egg is slender, greenish in color, white at the pole and provided with small reddish-brown spots. The micropyl rosette has seven leaves. There are small warts on the corners of the strongly wavy ribs.
Caterpillar
Adult caterpillars are green or brown in color and show yellowish longitudinal lines and wide, white-yellow side stripes.
Doll
The brown doll has a cone-shaped kremaster that is provided with two upwardly curved thorns.
Similar species
The moths of Isturgia roraria differ in the stronger dark pollination on the fore and hind wings. The black hem band is less pronounced. The main difference is the missing white longitudinal stripes on the underside of the hind wing.
Geographical distribution and occurrence
The black-lined broom spanner occurs locally in Western Europe. In the Southern Alps it rises to heights of 2000 meters. The main habitat are dry sand and heathland areas, bushy slopes as well as forest edges and clearings.
Way of life
The diurnal moths form two generations a year. The first generation flies from mid-May to late June, the second generation from late July to mid-August. When the sun is shining, the moths fly quickly and rest in the vegetation with their wings folded up. They were sucking the flowers of Eupatorium ( Eupatorium ) White sweet clover ( Melilotus albus ) and white clover ( Trifolium repens observed). The caterpillars feed on broom broom ( Cytisus scoparius ), and more rarely on other types of broom ( Genista ). The pupa hibernates.
Danger
The black-lined broom spider occurs in different numbers in the German federal states, is absent in some eastern German regions and is listed in category 3 (endangered) on the red list of endangered species .
swell
Individual evidence
- ↑ a b c d 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 c 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 .
- ↑ Manfred Koch , Wolfgang Heinicke, Bernd Müller: We determine butterflies. Volume 4: Spanner. 2nd, improved and enlarged edition. Neumann, Leipzig / Radebeul 1976, DNB 780451570 .
- ↑ 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 .
Web links
- Lepiforum eV photos
- www.schmetterlinge-deutschlands.de Endangerment
- Isturgia limbaria at Fauna Europaea. Retrieved September 12, 2011