Bog colored owl

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Bog colored owl
Coranarta cordigera.jpg

Bog owl ( Coranarta cordigera )

Systematics
Order : Butterflies (Lepidoptera)
Family : Owl butterfly (Noctuidae)
Subfamily : Hadeninae
Tribe : Hadenini
Genre : Coranarta
Type : Bog colored owl
Scientific name
Coranarta cordigera
( Thunberg , 1788)

The bog-owl ( Coranarta cordigera ) is a butterfly ( moth ) from the family of the owl butterflies (Noctuidae).

features

butterfly

The wingspan of the moth is about 21 to 26 millimeters. The forewings have a gray-brown to black-brown basic color, with the middle field being further darkened. The white or light yellow filled kidney blemishes are noticeable , at the edge of which a crescent-shaped dark mark can be seen. Above the kidney flaw - on the Costa - there are small white or silvery spots. The transverse lines are indistinct. The outer fringing area is slightly lightened, the outer edge is alternately black-brown and white dotted. The hind wings are bright yellow with a wide, sharply defined, black band and light fringes. The following color variations have been described:

  • f.variegata Tutt., with a gray band in the dark middle field
  • f.suffusa Tutt., with black forewings and a light hem band
  • f.aethiops Hoffm., with solid black forewings

Caterpillar, pupa

The caterpillar is reddish or brownish in color, has a light back line and also light side back lines. The side stripes are wide, yellowish and black at the top. The squat doll has two curved thorns on the cremaster .

Similar species

Similar types are:

  • Coranarta carbonaria ( Christoph , 1893). As Lafontaine discovered in 1987 after revising the entire species complex, this species is native to Siberia as well as Central and East Asia. All previous cordigera finds from this region were in truth carbonaria . The dark band on the hind wings of the moth is very narrow.
  • Coranarta restricta ( Yela , 2002), initially considered a variety of cordigera , was recognized as a distinct species due to differences in the genital apparatus. The dark band on the hind wings is of medium size. The species occurs on the Iberian Peninsula . It remains to be investigated whether the animals native to the Balkans are also part of restricta . In any case, the animals living in the higher regions of the Balkans are real cordigera .

In addition to the different widths of the fringes of the hind wings, the species can also be distinguished due to their different geographical occurrence.

On the surface, the heather- colored owl ( Anarta myrtilli ) also resembles the bog- colored owl, but myrtilli is more colorful, reddish and more contrasting, with more clearly developed transverse lines, a white spot between ring and kidney flaws and a broader dark band on the hind wings and a black center on their back.

Geographical distribution and habitat

The bog-owl is found in parts of Europe, mainly in the north. In Central and Southern Europe, the occurrence is limited to the higher mountains. In the Alps , it rises to 2200 meters. The species is characteristic of peat bogs and boggy swamps.

Way of life

The species is univoltin , which means that only one generation is formed per year. The moths fly in May and June. They are diurnal, prefer to fly in unsteady, low flight in the sunshine and like to visit flowers of various plants. They are persistent fliers, which is why they can be found far away from their actual habitats. In contrast, according to Meinecke in Baden-Württemberg, they were never observed outside of the raised bog habitats. The females lay the eggs individually on free-standing plants of the forage plant. The caterpillars feed on the leaves of various types of bilberry ( Vaccinium ), but prefer the bogberry ( Vaccinium uliginosum ) and live in July and August. The pupae overwinter.

Danger

The bog-owl is found in several federal states in Germany, can be numerous in very narrow places, but is classified as critically endangered on the Red List of Threatened Species (Category 1); only in Baden-Württemberg is it only endangered ( Category 3).

swell

Individual evidence

  1. ↑ a b c d H. Hacker, Lázló Ronkay, Márton Hreblay: Noctuidae Europaeae Volume 4, Entomological Press, Søro 2002, ISBN 87-89430-07-7
  2. ↑ Manfred Koch: We identify butterflies. Volume 3: Owls. 2nd, expanded edition. Neumann, Leipzig / Radebeul 1972, DNB 760072930 .
  3. ↑ Walter Forster, Theodor A. Wohlfahrt: The butterflies of Central Europe. Volume 4: Owls. (Noctuidae). Franckh'sche Verlagshandlung, Stuttgart 1971, ISBN 3-440-03752-5 .
  4. ↑ Günter Ebert (Ed.): The Butterflies of Baden-Württemberg Volume 7, Nachtfalter V. Ulmer Verlag Stuttgart 1998, ISBN 3-8001-3500-0
  5. ↑ 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 7: Nachtfalter V. Ulmer Verlag, Stuttgart 1998, ISBN 3-8001-3500-0 .
  • Manfred Koch : We determine butterflies. Volume 3: Owls. 2nd, expanded edition. Neumann, Leipzig / Radebeul 1972, DNB 760072930 .
  • Walter Forster , Theodor A. Wohlfahrt : The butterflies of Central Europe. Volume 4: Owls. (Noctuidae). Franckh'sche Verlagshandlung, Stuttgart 1971, ISBN 3-440-03752-5 .
  • H. Hacker, Lázló Ronkay, Márton Hreblay: Noctuidae Europaeae. Volume 4, Entomological Press, Søro 2002, ISBN 87-89430-07-7 .

Web links

Commons : Moor-Bunteule ( Coranarta cordigera )  - Collection of images, videos and audio files