Exothermic-reaction
Guides
Brachinus pallidus
Brachinus pallidus is a bombardier beetle in the family Carabidae, first described by Erwin in 1965. Like other members of the genus Brachinus, it possesses the remarkable chemical defense system for which bombardier beetles are famous: paired glands that combine hydroquinones and hydrogen peroxide to produce a hot, noxious spray of benzoquinones when threatened. The species is known from California and represents part of the diverse North American fauna of this chemically defended ground beetle genus.