Rock capsule tensioner

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Rock capsule tensioner
Perizoma hydrata (27086224998) .jpg

Rock capsule wrench ( Perizoma hydrata )

Systematics
Class : Insects (Insecta)
Order : Butterflies (Lepidoptera)
Family : Spanner (Geometridae)
Subfamily : Larentiinae
Genre : Perizoma
Type : Rock capsule tensioner
Scientific name
Perizoma hydrata
( Treitschke , 1829)

The rock capsule spanner ( Perizoma hydrata ) is a butterfly ( moth ) from the spanner family (Geometridae). The species name is derived from the neo-Latin word hydratus meaning "watered" and refers to the undulating transverse lines on the upper side of the forewing of the butterfly.

features

butterfly

The moths reach a wingspan of 15 to 25 millimeters. The sexes do not differ in color. The basic color of the forewing upper side is dark gray to gray-brown. In the post-fiscal region there is a light gray transverse band that is indistinctly delimited by undulating transverse lines. The wavy line stands out faintly bright. A light area can be seen at the apex . The upper side of the hind wing is colored white-gray.

Caterpillar

Adult caterpillars are short and stocky, have a glassy appearance and are pink-yellow to light pink-brown in color and black stigmas . The head capsule is glossy black, the neck plate and anal plate are dark brown.

Similar species

The hollow-tooth capsule tensioner ( Perizoma alchemillata ) differs through the strong whitish colored transverse band on the upper side of the front wing and the dark gray upper side of the hind wing.

Distribution and occurrence

Flower and capsule of the nodding cucumber, the main food of the caterpillars

The distribution area of ​​the rock capsule wrench extends through large parts of Europe and further east to Mongolia and Korea . The species is absent in the Netherlands , Iceland and the British Isles , in the north of Fennoscandinavia, and in the south of Spain , Italy and Greece . It prefers to colonize sunny rocky regions, warm coastal areas and dry meadows. In the Alps it rises up to 2000 meters.

Way of life

The rock capsule wrench forms one generation per year in most areas where the adults fly from mid-April to mid-July. In climatically favorable years, specimens from a second generation were found between the end of July and the end of August. The moths are crepuscular and nocturnal and visit artificial light sources . The main food of the caterpillars are the fruits of the nodding catchfly ( Silene nutans ). Sometimes other ciliate herbs ( silene ) are also accepted as food. The caterpillars live in the seed pods throughout their development. To prevent the seeds from scattering, the caterpillars close the capsules filled with seeds with a loose web. The species overwinters as a pupa .

Individual evidence

  1. ^ Arnold Spuler : The butterflies of Europe , Volume 2, E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, 1910, p. 61
  2. ↑ Axel Hausmann (Ed.), Vladimir Mironov: The Geometrid Moths of Europe 4. Larentiinae 2. , Apollo Books, Stenstrup (Denmark) 2004, ISBN 87-88757-40-4 , pp. 32-34
  3. ^ 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 , pp. 131/132
  4. ^ A b Günter Ebert, Daniel Bartsch, Armin Becher, Stefan Hafner: The butterflies of Baden-Württemberg. Volume 9: Spanner (Geometridae). Part 2: Nachtfalter VII. Ulmer Verlag, Stuttgart 2003, ISBN 3-8001-3279-6 , pp. 37-39
  5. ↑ Manfred Koch , Wolfgang Heinicke, Bernd Müller: We determine butterflies. Volume 4: Spanner. 2nd, improved and enlarged edition. Neumann, Leipzig / Radebeul 1976, DNB 780451570 , p. 146/147

literature

  • Axel Hausmann (Ed.), Vladimir Mironov: The Geometrid Moths of Europe 4. Larentiinae 2. , Apollo Books, Stenstrup (Denmark) 2004, ISBN 87-88757-40-4
  • Günter Ebert, Daniel Bartsch, Armin Becher, Stefan Hafner: The butterflies of Baden-Württemberg. Volume 9: Spanner (Geometridae). Part 2: Nachtfalter VII. Ulmer Verlag, Stuttgart 2003, ISBN 3-8001-3279-6 .
  • Karl Eckstein: The tensioners and the bear-like butterflies, 4th volume , KG Lutz 'Verlag, 1923

Web links

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