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Keyword: Alder |
Overview - a b c d e f g h i j k l m n o p q r s t u v w x y z |
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| In late April - early May, it appears on alder leaves once more, in order to start the so-called "maturation feeding". Alder can release hormones, which lower digests the beetle and thus forces it to change host. In this way alder are protected from excessive damage to their leaves. The alder leaf beetle then evades on other alder, willow, poplar, hazel, other fruit trees and herbs. These beetles often occur here in great numbers, which can kill younger trees and can limit growth in older trees. | | |
| | The young adult alder leaf beetle leaves its pupa in August and lives off the leaves of various trees and bushes until the end of September. These include alder (Alnus), willow (Salix), poplars (Populus), birch (Betula) and hazel (Corylus). At the end of September - beginning of October the alder leaf beetle hides in the ground, where it overwinters. | | |
| | | The antennae are black, long and threadlike. The wing covers (elytra ) are hairless and are densely covered in fine dots. The alder leaf beetle lives in the most diverse biotopes, is day active, and is found particularly frequently in flat country. It prefers damp areas, in which alder (Alnus) bushes or trees grow. | | |
| | After 5 to 14 days the larvae hatch. At the end of the 3rd larval stage they are about 11 mm in length and pupate. The larvae of alder leaf beetles are first olive, later cyan and shortly before pupating bluish in colour. They have 2 rows of very hairy warts. The larvae, like the adult beetles, feed on the leaves of the grey or speckled alder (Alnus incana), hornbeam (Carpinus), birch (Betula) and hazel (Corylus). They feed, initally in groups and later alone, by scraping the surface off the leaves from the underside, leaving only the veins, unlike the adults. eats the leaves from the ... | | |
| | The green shield bug is mainly found in hedges and on the foliage of trees. Linden, alder, thistles and nettles are the preferred food source of the green shield bug.
The defence secretions of this bug can causeallergic reactions in humans. | | |
| | The larvae of Leptura quadrifasciata feed mainly on willow wood. Alternative sources of food are oak, beech, birch, alder or hazel bushes. The beetles are not considered to be pests because the larvae reside in dead wood.
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| | Parent bugs live on birch and alder, feeding on the plant juices which they suck out while sitting on the leaves. | | |
| | Elasmostethus interstinctus prefer to live in sunny habitats, where they can be found on deciduous trees and shrubs. They eat or suck out the juices from the flowers of beech, alder and hawthorn, and occasionally those of herbaceous plants near the ground.
The larvae of Elasmostethus interstinctus live from June to August. They reach their adult stage in September and then overwinter. | | |
| | Alder leaf beetle | | The alder leaf beetle (Agelastica alni) belongs to the genus Agelastica, in the order beetles (Coleoptera), the suborder Polyphagan beetles (Polyphaga), the infraorder Cucujiformia, the superfamily Chrysomeloidea, the family leaf beetles (Chrysomelidae) ... | | |
| | In Central Europe the alder leaf beetle is commonly encountered and as only representative species of the genus Agelastica. In fact it is found almost everywhere in the Palearctic. It does not occur in the Alps. Agelastica alni reproduce once a year and are not endangered.... | | |
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| Frequent Queries: | | alder bug (4) | | alder beetles (2) | | birch green beetle (1) | | green beetle eating birch (1) | | birch beetles leaves (1) | | green larvae on birch leaves (1) | | alder black leaves bug (1) |
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