Apoderus erythropterus
| Apoderus erythropterus | ||||||||||||
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Apoderus erythropterus |
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| Scientific name | ||||||||||||
| Apoderus erythropterus | ||||||||||||
| ( Gmelin , 1790) |
Apoderus erythropterus is a beetle from the family of leaf rollers (Attelabidae), which belong to the weevils (in the broader sense) (superfamily Curculionoidea ). The German name Roter Sumpf-Blatttroller is occasionally used for it, but it is rarely used. An often used synonym is Compsapoderus erythropterus .
features
The beetle reaches a body length of around four to five millimeters. It is black with bright red-colored elytra. The body surface is smooth and shiny and hairless. It differs from the much more common, related hazel leaf roller ( Apoderus coryli ) in the sculpture of the wing covers. These are smoother (not wrinkled), have finer row points and no additional points in the fourth space between the row of points. The head has a short trunk (anatomically: rostrum) in front, which in this species is no longer than its width. What is striking, however, is the long, cheek-like extension of the temples behind the eyes and the resulting long neck-like head, which is typical of the species of the subfamily Apoderinae. The pronotum is bell-shaped to the rear, it has a constricted ring at the front and rear end and a longitudinal groove in the middle. The elytra are roughly rectangular with distinct front corners (shoulders) and much wider than the pronotum. The rails (tibia) of the legs in the male have one, in the female two red-brown hooks protruding inwards at the tip.
Various deviating color morphs of the species have been described from the eastern part of its range, e.g. B. the black-colored forma atricolor.
Way of life
The species develops on herbaceous rose plants . As food plants are given: swamp blood-eye , large meadow button , true meadowsweet . There is also information about successful rearing with other species such as B. Purple loosestrife . Information also on woody plants such as hazel and oak species are uncertain and may be based on migrating animals or confusion. Apoderus erythropterus lives exclusively in moors and marshland or on the banks of water.
The larva of the species develops, as is typical for leaf rollers, in a leaf wrap. To do this, the female cuts the leaf blade of the nutrient plant from both sides up to the midrib. It then rolls the front, now wilting part of the leaf blade into a roll and then lays an egg on it. The larva develops in the leaf wrap. In late summer she crawls out of the wrap, drops to the ground and pupates here in a doll room that she has dug herself. The beetles form one generation, possibly two generations per year. Adult animals have been observed for a long period from April to September.
distribution
The species has an extensive distribution area from Europe via Siberia to East Asia, it is also found in Japan. In Europe it is rare everywhere and in large parts of its range it is threatened with extinction or even already extinct. In Germany it is considered to be extinct. Only finds from the 19th century are available from East Germany. The last evidence comes from Schleswig-Holstein (1950). Current European finds are z. B. still from Poland.
swell
- Joachim Rheinheimer & Michael Hassler (2010): The weevils of Baden-Württemberg . Publishing house regional culture. ISBN 978-3-89735-608-5 .
- Lothar Dieckmann (1974): Contributions to the insect fauna of the GDR: Coleoptera- Curculionidae (Rhinomacerinae, Rhynchitinae, Attelabinae, Apoderinae) . Contributions to entomology: Contributions to the insect fauna of the GDR Vol. 24: 5–54, doi : 10.21248 / contrib.entomol.24.1-4.5-54 .
- GA Lohse: 3rd UFam. Attelabinae . In: H. Freude, KW Harde, GA Lohse (Ed.): Die Käfer Mitteleuropas . Volume 10. Goecke and Evers Verlag, Krefeld.
Individual evidence
- ↑ Dawid Marczak, Robert Lasecki, Miłosz A. Mazur, Marek Wanat (2011): Leaf-rolling weevils (Curculionoidea: Attelabidae, Rhynchitidae) in Kampinos National Park . Opole Scientific Society Nature Journal No 44: 135-140. download ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
