The insect or its larva is one of the most important in viticulture beneficials in the fight against Vine enemies, Of the large family, the species "Chrysoperla cernea" is the most significant because of its predatory performance against insect pests. The approximately 20-millimeter-sized insect has two longer, transparent greenish wings, the pale green body is traversed by a yellowish-white back strip (picture left). The adult flies live on nectar and are usually not predatory. After overwintering, the eggs provided with a stick handle are preferably deposited in groups on the leaf from which the larvae hatch.
The hatched about two millimeters larvae have two powerful forceps on the head, with which the prey is captured and then sucked out (picture right). Count among the prey animals mites and their eggs (especially spider mites), various lice (especially aphid like in the picture and cochineal ) Rebenthripse and cicadas, as well as eggs and larvae of small ones butterflies, Lacewing larvae are bred and used specifically in the vineyard against pests. See also under Organic viticulture and plant protection,