What is "autothysis"

Autothysis (from the Greek roots autos- αὐτός "self" and thysia θυσία "sacrifice") is the process where an animal destroys itself via an internal rupturing or explosion of an organ which ruptures the skin. The term was proposed by Maschwitz and Maschwitz in 1974 to describe the defensive mechanism of Camponotus saundersi, a species of carpenter ant. It is caused by a contraction of muscles around a large gland that leads to the breaking of the gland wall. Some termites (such as the soldiers of Globitermes sulphureus) release a sticky secretion by rupturing a gland near the skin of their neck, producing a tar effect in defense against ants. It is a form of suicidal altruism.