Lesser searcher beetle or caterpillar-hunter

Description

Calosoma inquisitor (the lesser searcher beetle or caterpillar-hunter) is a species of ground beetle. The species is found in northern Africa, Europe (northward to southern Scandinavia) and East to Asia Minor, Iran and the Caucasus, with isolated populations in eastern Siberia and Japan. The imagines are predatory on various insects and their larvae, especially, feed on Lepidoptera larvae. They can fly well and are found not only on the ground, but also in bushes and on trees. In case of danger the beetle can fall and then threaten by lifting up the front body and spreading the mandibles. The females lay about 50 eggs. The hatching larvae are also predatory and develop very quickly. They're in the ground. The beetles emerge in June, but still linger in a diapause until next spring in the ground. Calosoma is a genus of large ground beetles that occur primarily throughout the Northern Hemisphere, and are referred to as caterpillar hunters or caterpillar searchers. Many of the 167 species are largely or entirely black, but some have bright metallic coloration. They produce a foul-smelling spray from glands near the tip of the abdomen. They are recognizable due to their large thorax, which is almost the size of their abdomen and much wider than their head.