Dark green ram
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Dark green ram ( Rhagades pruni ) |
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| Scientific name | ||||||||||||
| Rhagades pruni | ||||||||||||
| ( Denis & Schiffermüller , 1775) |
The Dark Grünwidderchen or Heath Grünwidderchen ( rhagades pruni ) is a butterfly ( moth ) from the family of burnet (Zygaenidae).
features
The moths reach a wingspan of 20 to 25 millimeters. After hatching, they have black-blue or blue-green forewings, which later turn dark gray-brown and lose their metallic sheen. The hind wings are gray-black. The antennae of the males, in contrast to the thread-like ones of the females, are strongly combed.
The egg is yellow, the females lay them in small groups on the underside of the leaves of the food plants.
The caterpillars are about 15 millimeters long. They are broadly black and orange striped lengthways, the black stripe on the back in the middle has a fine light blue line and is bulging on each segment. They have thick, medium-length, light hair.
The doll is black-brown. The cocoon is whitish and is woven onto twigs and branches.
Subspecies
- Rhagades pruni callunae bobbin , 1906
- Rhagades pruni pruni (Denis & Schiffermüller, 1775)
Occurrence
The animals come from the Pyrenees across Central Europe to the Caucasus . They are absent in the north and also south of central Italy. As inhabitants of different biotopes , they live on dry limestone grasslands , warm grasslands and in dry and sandy areas as well as in moors , which is particularly the case in the Alpine foothills . They are very rare and do not occur in many places.
Way of life
The females lay their eggs in groups next to each other on the underside of the leaves of the forage plants. The caterpillars develop only briefly before winter and overwinter with a length of about three millimeters in a web. It happens that the caterpillars appear in large numbers and can defoliate plants. They pupate in a white web on branches of their forage plants.
The caterpillars feed differently depending on their location. On dry limestone grass they eat blackthorn ( Prunus spinosa ) and other rose plants such as B. Blackberries ( Rubus fruticosus ), common hawthorn ( Crataegus monogyna ), rarely also yellow sunflower ( Helianthemum nummularium ). On sandy dry grasslands and marshes they feed especially on heather ( Calluna vulgaris ).
Flight times
The diurnal moths fly annually in one generation from late June to August.
Hazard and protection
- Red list FRG: 3 (endangered)
swell
Individual evidence
- ↑ a b c d e Heiko Bellmann : The new Kosmos butterfly guide, butterflies, caterpillars and forage plants . Franckh-Kosmos, Stuttgart 2003, ISBN 3-440-09330-1 , p. 48 .
- ↑ a b C. M. Naumann, WG Tremewan: The Western Palaearctic Zygaenidae . 1st edition. Apollo Books, Stenstrup 1999, ISBN 87-88757-15-3 , pp. 107 (English).
- ↑ a b Rhagades pruni at Fauna Europaea. Retrieved March 14, 2011
- ↑ a b Hans-Josef Weidemann, Jochen Köhler: Moths, Spinners and Swarmers . Naturbuch-Verlag, Augsburg 1996, ISBN 3-89440-128-1 , p. 476 .
- ↑ Federal Agency for Nature Conservation (Ed.): Red List of Endangered Animals in Germany . Landwirtschaftsverlag, Münster 1998, ISBN 3-89624-110-9 .
literature
- CM Naumann, WG Tremewan: The Western Palaearctic Zygaenidae . 1st edition. Apollo Books, Stenstrup 1999, ISBN 87-88757-15-3 (English).
