Snouted Termite (Nasute Termite)

Nasutitermes corniger — and the broader genus Nasutitermes — is one of the most extraordinary genera of social insects on Earth. The genus contains about 250 species across the Neotropics, Africa, Australasia, and parts of Asia, and is characterized by a unique soldier morphology and defensive strategy that has no parallel elsewhere in the insect world. Soldiers have evolved 'NASUTE' defense: the head is modified into a long pointed snout (the 'nasus') that contains a glandular reservoir of a sticky, irritating defensive resin (a complex terpenoid mixture). When threatened, soldiers FIRE a stream of the resin from the snout tip at attackers from up to 1 cm away — the resin sticks to the attacker, irritates the cuticle and mucous membranes, and (against ants — the primary natural predator) immobilizes the attacker by gluing the legs together. The chemical defense is so effective that nasute soldiers have completely lost functional mandibles — they cannot bite, only spray. Mandibular reduction is so complete that the soldiers cannot even feed themselves; they are fed by workers throughout life. The trade-off (give up jaws entirely in exchange for ranged chemical defense) is one of the most-cited examples of evolutionary commitment in animal biology. Nasutitermes also build dramatic nests on tree trunks ('carton' nests of chewed wood and saliva) that can grow to 50+ cm diameter, and the species is one of the major Neotropical decomposers of dead wood. The chemical defense has been studied extensively for biomimetic applications in adhesive technology and pest-deterrent compound research.