Two-point shaft belt tensioner

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Two-point shaft belt tensioner
Scotopteryx bipunctaria.jpg

Two-point wavy welt tensioner ( Scotopteryx bipunctaria )

Systematics
Class : Insects (Insecta)
Order : Butterflies (Lepidoptera)
Family : Spanner (Geometridae)
Subfamily : Larentiinae
Genre : Scotopteryx
Type : Two-point shaft belt tensioner
Scientific name
Scotopteryx bipunctaria
( Denis & Schiffermüller , 1775)

The two-point wavy welt tensioner ( Scotopteryx bipunctaria ), also called double-dotted line tensioner , is a butterfly ( moth ) from the family of the tensioners (Geometridae) and is classified in their subfamily Larentiinae .

features

butterfly

The moths reach a wingspan of 26 to 32 millimeters. Their basic color is predominantly whitish-gray. The dark gray or brownish middle field is lightened in the middle. Typical of the species and giving it its name are two small, close-together, black centers. There are more black dots on the hem. There are also some dark cross lines. A dark shadow can be seen near the wing tip. The hind wings are gray and show dark, indistinct transverse lines. The antennae of the males are combed, those of the females are thread-like.

Caterpillar

Adult caterpillars are gray, ocher or slate in color and have light longitudinal lines and gray side stripes. The ventral side is yellowish and shows broad, blackish, interrupted longitudinal lines.

Doll

The smooth, cloudy red-brown colored doll has an elongated shape.

Geographical distribution and occurrence

The two-point shaft belt tensioner can be found from Morocco and Spain through Western and Central Europe including the British Isles to the Urals . In the north it is found in the Baltic States , in the south over Italy and the Balkan Peninsula to the Black and Caspian Seas . The species prefers areas with limestone soil. In the Alps it occurs at altitudes up to over 2500 meters. It inhabits warm slopes, rocky hills and dry and semi-arid grasslands.

Way of life

The crepuscular and nocturnal moths fly in one generation from June to August. During the day they can easily be roused by rocks or vegetation, at night they like to come to artificial light sources . The caterpillars live from September, overwinter and pupate on the ground in May or June of the following year. They feed on various low plants. These include vetch ( Vicia ), birdsfoot trefoil ( Lotus ), horseshoe vetch ( Hippocrepis ), germander ( Teucrium ) and others.

Danger

The two-point shaft belt tensioner occurs in different numbers in the German federal states, is absent in many northern German regions and is on the red list of endangered species on the pre-warning list.

Subspecies

The following subspecies are known:

  • Scotopteryx bipunctaria bipunctaria
  • Scotopteryx bipunctaria cretata
  • Scotopteryx bipunctaria maritima

swell

Individual evidence

  1. ↑ a b c Walter Forster , Theodor A. Wohlfahrt : The butterflies of Central Europe. Volume 5: Spanner. (Geometridae). Franckh'sche Verlagshandlung, Stuttgart 1981, ISBN 3-440-04951-5 .
  2. ↑ a b Günter Ebert (Ed.): The butterflies of Baden-Württemberg . 1st edition. tape 8 . Moth VI. Spanner (Geometridae) 1st part. Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3497-7 .
  3. ↑ Manfred Koch , Wolfgang Heinicke, Bernd Müller: We determine butterflies. Volume 4: Spanner. 2nd, improved and enlarged edition. Neumann, Leipzig / Radebeul 1976, DNB 780451570 .
  4. ↑ 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 . 1st edition. tape 8 . Moth VI. Spanner (Geometridae) 1st part. Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3497-7 .

Web links

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