Eurygaster maura
Common chinch bug ( Eurygaster maura )
The common chinch bug ( Eurygaster maura ) is a Wanzenart from the family of shield bugs ( Scutelleridae ).
Features
The animals reach a body length of 8.5 to 10 millimeters. You have a variable -brown base color and pattern. The similar turtles bug ( Eurygaster testudinaria ) is slightly larger, and differs by the Tylus ( front wedge), which is somewhat lower among the similar species at the top of the head as the side lying by him cheeks. In the Commons the chinch bug Tylus is on one level with the cheeks, so that the top of the head is gerandet evenly. The second term of the sensor is twice as long as the third party in the Commons chinch bug; in the similar way, it is only about 1.5 times as long. The rear corners of the pronotum are also somewhat less prominent in the Commons chinch bug. With these distinguishing features of the two types are to be distinguished not always unambiguously so that a genitalmorphologische investigation is necessary then. The females of Commons chinch bug missing the gap between the genital plates and the next nearest abdominal segment, in males of the aedeagus bears two spines inside.
Distribution and habitat
The species is in almost all of Europe, North Africa and spread further east to Central Asia. It also occurs in North America. In Central Europe it is to find the most common species in the genus, anywhere, even if it occurs much less frequently in the northwest than in the south and east. The species inhabited dry, open to semi- shaded habitats with vegetation of grasses, but they are also found in fields of cereal.
Way of life
The animals live on grasses, such as on ostrich grasses ( Agrostis ), brome ( Bromus ), Hank grasses ( Dactylis ) and fescue ( Festuca ). How austriaca also the closely related Eurygaster find older nymphs and adult animals but also on other plants, especially on composite flowers such as on Knapweed (Centaurea ), Ring thistles ( Carduus ), thistles ( Cirsium ) or chamomile (Matricaria ).
The nymphs can be observed from May to August from July occur, the adult animals. Parallel to the adult animals may to October nymphs occur in the fall, however, do not survive the winter.