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The furrowed weevil (also Lappenrüssler) belongs to the family of weevil and occurs in much of Europe, North America and Australia. The long-known insect occurs as a major pest of many plants and also of vines on. The flightless beetle is about one centimeter long, gray-black in color and has a spatulate elongated head and clearly furrowed head with long, bent probes, which gave it the name. The hibernation takes place as a beetle, prepuce or larva in the ground. The two to three-year-old females can develop up to 800 eggs in the course of their life, which superficially soil them in the vicinity of the plant during the entire season. After one to three weeks, the ivory-bred and brawn-headed, the Engerling of the cockchafer very similar larvae and attack the roots.

Frayed weevil - beetle and larva

This can lead to a dying of the vines, in young plants and nurseries This can have a devastating effect. After the larvae have reached a certain size, they go as a preppy in the wintering. In spring, the pest (only females) migrates to the earth's surface and usually climbs the vines at night to eat on the still closed buds or on the bottom leaves. But this is less dangerous than the root damage. The leaves are gnawed from the edge, resulting in a typical feeding pattern (U-shaped bastard) with round spots. Also typical are about two millimeters long, black Kotreste. A similar species, also affecting vines, is the lovage weevil . The conventional control of pests is usually by insecticides, The larvae in the soil but also by means of special nematodes fought biologically. See also below Vine enemies,

Pictures: © Thomas Lohrer

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