Oblong oval ladybug
| Oblong oval ladybug | ||||||||||||
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Oblong oval ladybird ( Rhyzobius chrysomeloides ) |
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| Rhyzobius chrysomeloides | ||||||||||||
| ( Autumn , 1792) |
The oblong oval ladybird ( Rhyzobius chrysomeloides ) is a beetle from the ladybird family (Coccinellidae). It is also called the Eastern slender ladybug .
description
The beetles are about 2.5 to 3.5 millimeters long. Their body is slightly elongated oval. The elytra are brown and have no precisely defined points. They look similar to the shiny slender ladybug ( Coccidula rufa ), but have dark areas on their bodies.
Eastern and Western slender ladybug
The coloring and drawing of Rhyzobius chrysomeloides , also called the Eastern slender ladybug, is very variable and ranges from four dark spots to large U-shaped arches. Due to the even hair on the wings, this drawing only appears matt. It is difficult to distinguish it from the common single-colored ladybird ( Rhyzobius litura , also known as the western slender ladybug ). In addition to the less convex, more elongated body shape of the elongated oval ladybird, its pronotum is rounder and more pointed at the base than the related Rhyzobius litura . The keels of the prosternum are parallel between the coxes of the forelimbs. In many cases, a reliable identification of the species is only possible through a microscopic examination of the male genital apparatus.
Occurrence
The oblong oval ladybug occurs in southern and western Europe (but not in Great Britain) and in eastern Europe . In Central Europe he lives z. B. in the milder areas of Germany such as Baden-Württemberg .
Way of life
The animals live on fruit and conifer trees (especially pines ), but also on bushes. Usually they can be found on the sheltered side of the trees. They overwinter in the moss or under the bark of the trees. Many specimens of this species have stunted wings similar to the related single-colored ladybirds and can fly badly. In the event of danger, they do not flee but pretend to be dead for a long time.
food
The adults and larvae feed on aphids .
literature
- Karl Wilhelm Harde and Frantisek Severa: The Kosmos Käferführer. The Central European beetle. Franckh-Kosmos Verlags-GmbH & Co, Stuttgart 2000 ISBN 3-440-06959-1
Individual evidence
- ^ Bernhard and Hertha Klausnitzer: Ladybirds . Die Neue Brehm-Bücherei Volume 451, Westarp Wissenschaften, 4th edition, Magdeburg 1997, page 63
- ↑ Atlas of ladybirds of Russia photo
- ↑ Rhyzobius chrysomeloides distribution map at GBIF
- ↑ Die Käfer Baden-Württemberg 1950-2000 ( 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. Directory of the Coccinellidae in Baden-Württemberg
Web links
- Rhyzobius chrysomeloides in Fauna Europaea
- Rhyzobius chrysomeloides description and Dutch distribution map (nl.)