German name (also Fransenflügler) for the vine pest Rebenthrips; see there.
Insect belonging to the Thysanoptera with 5,500 species worldwide, of which around 400 species occur in Central Europe. They bear the trivial name fringed winged insects because of their typical long hair fringes on the edges of their wings. Only the species vine thrips (Drepanothrips reuteri) is of importance as a pest on vines.
The insect overwinters as a female preferably under the bark of the stem, but also on withered leaves and in the soil. With the budding in spring, the first animals migrate to the leaves and lay bean-shaped eggs of around 0.2 millimetres in size in the leaf tissue. Development takes place via two larval stages and up to three nymphal stages (juvenile stages) to the fully developed adults. These are only 0.6 to 0.8...
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Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg