Carpenter ants (Camponotus cylindricus) are found in Borneo and expel the lethal sticky substance to defend their colony. Both ant and invader are killed in these attacks; they fall from the canopy as a pair into the leaf litter below, to eventually be eaten by something. Most of the bodies of the south-east Asian Camponotus cylindricus ants are for storage of the deadly secretion. The insects react quickly: when researchers lightly touched them with forceps their abdomen walls ruptured.
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Image shows a carpenter ant that has ruptured her body to spew sticky yellow glue, which has killed both her and the larger worker of another ant species Credit: Mark Moffett/Minden Pictures/FLPA