Oak Zero Owl

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Oak Zero Owl
Oak owl (Dicycla oo), male

Oak owl ( Dicycla oo ), male

Systematics
Class : Insects (Insecta)
Order : Butterflies (Lepidoptera)
Family : Owl butterfly (Noctuidae)
Subfamily : Xyleninae
Genre : Dicycla
Type : Oak Zero Owl
Scientific name
Dicycla oo
( Linnaeus , 1758)

The oak owl ( Dicycla oo ) is a butterfly from the owl butterfly family (Noctuidae).

features

butterfly

The wingspan of the moth is 32 to 39 millimeters. The color spectrum of the forewings is very extensive and shows sulfur yellow, ocher yellow, brownish or reddish tones. Some specimens show a darkened fringe and root field. The bright outer edge of the hem is criss-crossed with dark veins. The cone and ring flaws are round and close together, which is what led to the scientific name oo or the part of the name “Nulleneule”. The English name of the species "Heart Moth", however, refers to the heart-shaped kidney flaw. The hind wings are whitish. The antennae of the males are provided with double comb teeth, those of the females are thread-shaped. The proboscis is well developed. The females have a slightly longer abdomen with a protruding laying tube .

egg

The hemispherical egg is slightly flattened at the base and covered with a clear network. It has a light yellow color with a greenish tinge.

Caterpillar

Adult caterpillars are reddish-brown in color. The broad white line to the back is broken up into dots. The yellow and white side stripes are also wide and divided into dots. The secondary ridge lines are white and very narrow.

Geographical distribution and habitat

The oak zero owl is local in Europe. It is usually rare in the north, but more common in the south. It can also be found in Turkey , Transcaucasia and the Caucasus , Israel , Iran and Iraq . In the Alps it rises to heights of 1200 meters. The animals mainly inhabit open oak forests.

Way of life

The univoltine moths are crepuscular and nocturnal and live from June to August. They like to visit bait that has been placed on them, which they seek out before dark, and they also appear at artificial light sources at night . The caterpillars, which live from May to June, feed on the leaves of oak species ( Quercus ). They prefer to stay between leaves that are spun together. The egg is hibernating.

Danger

The oak zero owl was still to be found in large numbers in Germany until the middle of the 20th century. However, there has been a significant decline since then. That is why it is now mostly rare or has been lost and is listed in Category 3 (“endangered”) on the Red List of Endangered Species .

swell

Individual evidence

  1. ↑ a b c Michael Fibiger, Hermann Hacker: Amphipyrinae, Condicinae, Eriopinae, Xyleninae (part) . In: Michael Fibiger, László Ronkay, Barry Goater, Martin Honey (eds.): Noctuidae Europaeae . tape 9 . Entomological Press, Sorø 2007, ISBN 978-87-89430-11-9 (English).
  2. ^ A b Walter Forster , Theodor A. Wohlfahrt : The butterflies of Central Europe. Volume 4: Owls. (Noctuidae). Franckh'sche Verlagshandlung, Stuttgart 1971, ISBN 3-440-03752-5 .
  3. ↑ Manfred Koch : We identify butterflies. Volume 3: Owls. 2nd, expanded edition. Neumann, Leipzig / Radebeul 1972, DNB 760072930 .
  4. ↑ Federal Agency for Nature Conservation (Ed.): Red List of Endangered Animals in Germany . Landwirtschaftsverlag, Münster 1998, ISBN 3-89624-110-9 .

literature

  • Arno Bergmann: The large butterflies of Central Germany. Volume 4/2: Owls. Distribution, forms and communities. Urania-Verlag, Jena 1954, DNB 450378381 .
  • Michael Fibiger, Hermann Hacker: Amphipyrinae, Condicinae, Eriopinae, Xyleninae (part) . In: Michael Fibiger, László Ronkay, Barry Goater, Martin Honey (eds.): Noctuidae Europaeae . tape 9 . Entomological Press, Sorø 2007, ISBN 978-87-89430-11-9 (English).
  • Günter Ebert (Ed.): The butterflies of Baden-Württemberg . 1st edition. tape 6 . Moth IV. Noctuidae 2nd part. Ulmer, Stuttgart (Hohenheim) 1997, ISBN 3-8001-3482-9 .

Web links

Commons : Oak Zero Owl  - Collection of images, videos, and audio files