The Nasutitermitinae is a cosmopolitan subfamily of higher termites that includes more than 80 genera. The highly derived soldier caste exhibits vestigial mandibles and a protruding fontanellar process on the head, known as the nasus, from which they can "shoot" chemical weaponry. Notable genera include the notorious wood-eating Nasutitermes, and the conspicuous Hospitalitermes and Constrictotermes, both distinguished for their brazen habit of forming extensive foraging trails exposed to the open.