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Vines cryptocephalinae

Trivial name (also clerk, vine leaf fall beetle) for the leaf beetle species Bromius obscurus. Fall beetle is derived from the fact that the Beetle in danger of falling from the leaf and standing dead. And the name Schreiber from the fact that the feeding points on the leaves look like lines of text. There are at least two host-specific types, one for vines and one for willow-herb. The body of the five to six millimeter long beetle living on the vine is colored black, while the wing covers can be reddish brown. The distribution area extends almost over the entire northern hemisphere.

Vine fall beetle - development and beetle

The females lay the eggs on the Leaf underside or in crevices of the plant, from which the larvae hatch after a few days and hide in the ground. Roots are eaten there. Wintering takes place in the ground and pupation in spring. The beetles appear from May to October. Strip-like holes approximately one millimeter wide and ten to fifteen millimeters long are eaten in the plant tissue (stems, leaves and fruits). The vine fall beetle does not cause any major damage, in Austria it is considered to be economically insignificant and "not worth fighting". If necessary, the larvae are drowned by flooding the cultures with water in the spring. See a list of all pests below Vine enemies,

Left picture: © PP Kohlhaas / AGES Vienna
Right: Von Siga - Own work, CC BY-SA 3.0 , Link

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