Willow hem strap tensioner

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Willow hem strap tensioner
Willow-Hemp Tensioner (Epione repandaria), female

Willow- Hemp Tensioner ( Epione repandaria ), female

Systematics
Class : Insects (Insecta)
Order : Butterflies (Lepidoptera)
Family : Spanner (Geometridae)
Subfamily : Ennominae
Genre : Epione
Type : Willow hem strap tensioner
Scientific name
Epione repandaria
( Hufnagel , 1767)
Willow-hem tape tensioner, male
Aspen hem strap tensioner, male (for comparison)

The willow-hem ribbon tensioner ( Epione repandaria , Syn . : Epione apiciaria ) is a butterfly from the family of the tensioners (Geometridae). In English usage, the species is referred to as Bordered Beauty .

features

butterfly

The moths reach a wingspan of 23 to 29 millimeters. There is no sexual dimorphism between the sexes . The wing color varies on the upper side from ocher yellow to yellow orange and is provided with a fine red to red-brown horizontal line. On the upper side of the forewing, the acute-angled inner transverse line stands out blackish. The also blackish outer transverse line begins directly in the wing tip , is broadly purple-gray towards the edge, runs to the middle of the inner edge and continues on the hind wings. A black discal spot is punctiform. The antennae of the males are long ciliate on both sides, those of the females are bristle-shaped.

egg

The egg has an oval shape. It is orange-red in color and covered with yellow spots.

Caterpillar

Adult caterpillars have a gray-brown to red-brown, more rarely also greenish color, are slightly tapered in the front third and show whitish point warts. On the back, more or less clear, bright diamond marks stand out. When stretched out, the caterpillars look like dried up, broken off small branches and are thus well protected from predators.

Similar species

In the similarly colored moth of the aspen- fringed ligament ( Epione vespertaria ), the outer transverse line begins at the front edge of the forewing and not in the wing tip.

distribution and habitat

The distribution area of ​​the willow-hem tape tensioner extends through Europe, including the British Isles to the Amur . The main habitat are humid areas, for example swamp forests, river plains, riparian areas and moors. In the Alps , the species rises to an altitude of 1,600 meters.

Way of life

The moths are nocturnal and usually fly in one generation from May to September. Occasionally, an incomplete second generation occurs in warm regions. At night, the moths appear in artificial light sources . The caterpillars feed on the leaves of willow ( Salix ), poplar ( Populus ), alder ( Alnus ) or blackthorn ( Prunus spinosa ). The species overwinters in the egg stage.

Individual evidence

  1. ^ Peder Skou & Pasi Sihvonen. In: Axel Hausmann (Ed.): The Geometrid Moths of Europe, Volume 5: Subfamily Ennominae I , Brill, Leiden, 2015, ISBN 978-90-04-25220-2 , pp. 233-235
  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 , p. 219
  3. ^ Günter Ebert (Ed.): The butterflies of Baden-Württemberg. 1st edition. Volume 9. Moths VII. Geometridae 2nd part. 1 Ulmer, Stuttgart (Hohenheim), 2003, ISBN 3-8001-3279-6 , pp. 372-375
  4. ↑ flight times
  5. ↑ a b Manfred Koch , Wolfgang Heinicke, Bernd Müller: We determine butterflies. Volume 4: Spanner. 2nd, improved and enlarged edition. Neumann, Leipzig / Radebeul 1976, DNB 780451570 , pp. 210/211

literature

  • Peder Skou & Pasi Sihvonen. In: Axel Hausmann (Ed.): The Geometrid Moths of Europe, Volume 5: Subfamily Ennominae I , Brill, Leiden, 2015, ISBN 978-90-04-25220-2
  • Günter Ebert (Ed.): The butterflies of Baden-Württemberg. 1st edition. Volume 9. Moths VII. Geometridae 2nd part. 1 Ulmer, Stuttgart (Hohenheim), 2003, ISBN 3-8001-3279-6

Web links

Commons : Willow Hem Tape Tensioner  - Collection of images, videos, and audio files