Formerly gorse stretcher

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Formerly gorse stretcher
Formerly gorse spider (Chesias rufata), preparation

Formerly gorse spider ( Chesias rufata ), preparation

Systematics
Class : Insects (Insecta)
Order : Butterflies (Lepidoptera)
Family : Spanner (Geometridae)
Subfamily : Larentiinae
Genre : Chesias
Type : Formerly gorse stretcher
Scientific name
Chesias rufata
( Fabricius , 1775)

The early gorse spanner ( Chesias rufata ), sometimes also called gorse heather silver stripe spanner , is a butterfly ( moth ) from the spanner family (Geometridae).

features

butterfly

The wingspan of the moth is 26 to 32 millimeters. The approximately oval shaped wings are typical of the species. The silver-gray to ash-gray middle field of the forewings is bounded inward by a mostly indistinct, narrow and outwardly by a wide, very clear red-brown transverse band. Some specimens also show a gray root field and very broad red-brown areas on both sides of the central field. The scientific name of the species from the Latin language is derived from the color : rufus  = "red". There is a dark graduation line at the apex . A whitish wavy line stands out near the hem. The hind wings are colored ocher gray without drawing.

egg

The oval egg is light orange in color, has a recessed micropyl zone and is slightly spotted on the surface.

Caterpillar

Adult caterpillars are green to gray-green or brown-green in color and show thin light dorsal and side dorsal lines as well as a wide white lateral stripe and black stigmas .

Doll

The red-brown pupa is characterized by darker wing sheaths.

Geographical distribution and occurrence

The early gorse spider occurs in large parts of Central and Western Europe, including the British Isles , and from Morocco to Asia Minor . The altitude distribution in the southern Alps is 1500 meters. The species prefers to colonize gorse heaths, bushy slopes and rocky valleys.

Way of life

The moths are crepuscular and nocturnal. The main flight time of a first generation is from April to May. However, specimens were found in March. A rarer second generation forms between June and August. Occasionally, moths suckling on pussy willow ( Salix ) or barberry blossoms ( Berberis ) have been observed. At night they also appear in artificial light sources . The majority of the caterpillars can be found from June to October and live on common broom ( Cytisus scoparius ), dyer's broom ( Genista tinctoria ) or German broom ( Genista germanica ). The pupae overwinter.

Danger

In the German federal states, the early gorse spider occurs in different frequencies and is listed in category 3 (endangered) on the red list of endangered species .

Subspecies

The following subspecies are distinguished:

  • Chesias rufata rufata
  • Chesias rufata cinereata
  • Chesias rufata obliquaria
  • Chesias rufata occidentalis
  • Chesias rufata ornata
  • Chesias rufata plumbeata
  • Chesias rufata scotica

swell

Individual evidence

  1. ^ Arnold Spuler: The butterflies of Europe , Volume 2, E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, 1910
  2. ^ 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 .
  3. ↑ a b c 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 .
  4. ↑ Manfred Koch , Wolfgang Heinicke: We determine butterflies. 3. Edition. Neumann, Radebeul 1991, ISBN 3-7402-0092-8 .
  5. ↑ Federal Agency for Nature Conservation (Ed.): Red List of Endangered Animals in Germany . Landwirtschaftsverlag, Münster 1998, ISBN 3-89624-110-9 .
  6. ^ Encyclopedia of Life

literature

  • Walter Forster , Theodor A. Wohlfahrt : The butterflies of Central Europe. Volume 5: Spanner. (Geometridae). Franckh'sche Verlagshandlung, Stuttgart 1981, ISBN 3-440-04951-5 .
  • 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

Commons : Formerly Gorse Spanner  - collection of images, videos and audio files