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Vines cryptocephalinae

Trivial name (also Schreiber, vine leaf beetle) for the leaf beetle Bromius obscurus. Fall beetle is derived from the fact that the Beetle fall from the leaf at risk and put himself dead. And the name Schreiber, that the feeding spots on the leaves look like lines of text. There are at least two host-specific species, one for vines and one for fireweed. The body of the five to six millimeter long beetle living on the grapevine is colored black, while the winglets may be reddish brown. The distribution area extends almost over the entire northern hemisphere.

Grapevine beetle - development and beetle

The females lay the eggs on the Leaf underside or in columns of the plant, from which hatch after a few days, the larvae and crawl in the ground. There roots are eaten. Hibernation takes place in the ground and pupation in spring. The beetles appear from May to October. In the plant tissue (stems, leaves and fruits) strip-shaped holes of about one millimeter in width and ten to fifteen millimeters in length are eaten. However, the vine ladybug causes no major damage, in Austria he is considered economically meaningless and "not combating". If necessary, the larvae are drowned by flooding the crops with water in the spring. See a list of all pests below Vine enemies,

Picture left: © PP Kohlhaas / AGES Vienna
Right: From Siga - Own Work, CC BY-SA 3.0 , Link

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