Carabus cancellatus
Körnerwarze ( Carabus cancellatus )
The Körnerwarze ( Carabus cancellatus ) is a beetle of the family of ground beetles ( Carabidae ).
Features
The beetles reach a body length from 17 to 32 millimeters. Their body color is very variable, ranging from bronze and copper color to green and brass - rare - black. Therefore, the species is divided into several subspecies. The elytra each bear three broken chain lines and between three continuous longitudinal ribs. The elytra are indented clearly at the top, lower in females than in males. The first antennal segment is colored red in most grains warts what they slightly different from the other Carabus species. The legs are also red in some animals ( Fig. 1). The sides of the elytra are more rounded than in Carabus granulatus and achieve the greatest width is about in the middle. The pronotum hind angles are flatter than Carabus granulatus.
Similar Species
- Grain beetle ( Carabus granulatus )
- Robust ground beetle ( Carabus ullrichi )
Subspecies
The species is currently divided into nine subspecies:
- Carabus cancellatus alessiensis apple Beck, 1901
- Carabus cancellatus cancellatus Illiger, 1798
- Carabus cancellatus carinatus Charpentier, 1825
- Carabus cancellatus corpulentus Kraatz, 1880
- Carabus cancellatus emarginatus Duftschmid, 1812
- Carabus cancellatus excisus Dejean, 1826
- Carabus cancellatus graniger Palliardi, 1825
- Carabus cancellatus intermedius Dejean, 1826
- Carabus cancellatus tibiscinus Csiki, 1905
Synonyms
- Carabus durus Reitter, 1896
- Carabus scythicus foam, 1857
- Carabus semistriatus Fischer von Waldheim, 1823
- Carabus sulinensis Born, 1902
Occurrence
The animals are found in Europe and Asia, are missing in the far north and south from northern Italy and the Pyrenees. In the British Isles they were introduced. Grains warts live on fields, meadows and gardens, less commonly, especially in light forests, from the plains to the mountains in about 1,000 meters above sea level. One finds the common type from April to September, especially under stones.
Way of life
The diurnal and nocturnal predators feed on insects, snails, earthworms, and carrion and are important biological pest control. They are among the fastest ground beetles and can travel a meter in about six seconds. If the animals are disturbed, they can inject far gastric juice up to 25 centimeters. The females lay about 45 eggs which hatch into larvae, which have a similar lifestyle as the Imagines. They pupate in the same year, so that the imagos still hatch in the fall. This winter as from October under bark or between grass tufts are sometimes sociable and come in April of the following year reappear. Then you live until August.