Metriini
Guides
Metrius contractus contractus
Contracted Bombing Beetle
Metrius contractus contractus is a subspecies of ground beetle in the family Carabidae, native to western North America. It belongs to the tribe Metriini, which is notable for its specialized chemical defense mechanisms. The species has been documented in Canada and the United States, with observations concentrated in western regions. Like other members of its genus, it possesses the ability to discharge defensive chemicals, earning it the common name 'Contracted Bombing Beetle.'