Colobopsis impressa is a small arboreal ant whose minor workers (right) mimic Crematogaster acrobat ants. The major workers (left) serve as living doors, plugging nest entrances with an enlarged head. Laboratory colony at the University of Central Florida, USA
Arboreal Tetraponera nest in hollow spaces of twigs and branches. The ants' slender bodies allow them to maneuver in narrow spaces. (Tetraponera laeviceps). Cape York Peninsula, Queensland, Australia
Tetraponera clypeata nest inside the hollow thorn of an Acacia tree. The elongate form of these ants allows them to maneuver in such cramped quarters. St. Lucia, KZN, South Africa
