These insects (Cecidomyiidae) are distributed worldwide with about 6,000 species. The body length is 0.5 to 4, with a few up to 8 millimeters. The body is usually yellow-orange, ocher, light or dark red to almost black. They spend almost their entire life in the larval stage. The larvae of almost all species live monophagus (narrow food spectrum) on only one plant species. The fully developed mosquitoes only live for a short time and hardly absorb any food. In Europe, the species Blattgallmücke (Cecidomyia oenophila) and the Rebblüten-Gallmücke (Contarinia viticola) are among the Rebstock -Schädlingen. The females drill the leaf underside and the flower stalks and lay their eggs. The hatched two-millimeter larvae live in the formed eponymous Gallen, The Rebbblüten-Gallmücke places the eggs in the still closed bloom plants. They usually do not need to be fought as they are from parasites (eg, weeping).
But there are also some polyphagous feeding predatory species (broad food spectrum). The larvae of the species Aphidoletes aphidimyza feed mainly on aphids and Spinn mite mite , These are partly under the Biological Crop Protection Biological Crop Protection when beneficials used by the corresponding granules are applied in the vineyard. The mosquitoes lay their eggs directly in Aphid colonies of aphids from. The hatching larvae sting the aphids and suck them out. A larva can consume up to 50 aphids. After about two weeks, the larvae fall to the ground, penetrate flat and pupate there. A short time later the adult animals hatch and the circulation begins again. See also below Vine enemies .
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