Sorrel beetle ( Gastrophysa viridula ), male
The Green Sorrel beetle ( Gastrophysa viridula ), also called sorrel leaf-beetle, is a beetle of the family of leaf beetles ( Chrysomelidae ).
- 3.1 nutrition
- 3.2 Reproduction
The Green Sorrel beetle reaches a body length of four to seven millimeters. Females are doing significantly larger than males. The very smooth body and elytra metallic shimmer in many colors. Depending on the light the color of green, blue, red to purple and violet may be enough. The abdomen is significantly greater in females and may be bloated during the mating season. Abdomen, pronotum and head distance themselves clearly from each other. The eyes are at the Green Sorrel beetle front, side of the head. The sensors are of medium length and have a slightly serrated shape. The legs predominantly greenish shimmer and are strongly built.
- Gastrophysa viridula viridula ( De Geer, 1775)
- Gastro Idea viridula ( De Geer, 1775)
The Green Sorrel beetle is widespread in many parts of Central Europe. In the east, the range extends to the Caucasus and in places, to western Siberia. They usually live in heathland, forest edges and larger gardens. It can be found usually at dock ( Rumex ).
Way of life
The beetle and its larvae feed on phytophagous especially of dock plants and can at the mass- occurrence cause considerable damage to these plants. Beetles and larvae produce in the aggregate a massive Schabefraß followed by pitting, the clear even perforate the leaves to Skelettierfraß and the plant thus not only visually draws heavily affected. In addition to the eponymous sorrel and related Rumex species and a variety of other plants are infested. Specifically, host plants from a total of 10 families are described, for example, buckwheat family ( Polygonaceae ), cruciferous plants ( Brassicaceae), Violet Family ( Violaceae ) or Borage Family ( Boraginaceae ). Not all host plants, however, is possible until a complete beetle larvae development.
The mating season extends beyond the spring well into the fall. Usually it comes to three generations, the third generation overwinters as beetles. After successful fertilization, the female lays several hundred eggs. In this case, the eggs that have a yellowish color and oval in shape, stored in Situated about 30 to 40 pieces to the lower leaf surface of forage crops. After a few days, the larvae hatch, which have a grayish to dark gray color. The segmented body is strikingly pockig. After three larval stages, the larvae burrow to pupate a few inches deep in the ground, where after one to two weeks slip the finished beetles. The flight radius of hatched animals is low, it is usually less than ten meters. The beetles can be found from April to October.