Odontomachus meinerti, with mandibles locked into the "ready-to-fire" position, trigger hairs pointing forward.

Misiones, Argentina
The tip of the trap: the blunt-force weapons of the trap-jaw ant Odontomachus meinerti.

Misiones, Argentina
An Odontomachus meinerti worker threatens the photographer.

Misiones, Argentina
Sensitive trigger hairs of the trap-jaw ant Odontomachus coquereli protrude forward from the base of the mandibles.

Madagascar
Caught!  A small cricket is impaled on the mandibles of a malagasy trap-jaw ant, Odontomachus coquereli.

Madagascar
Caught!  A small cricket is impaled on the mandibles of a malagasy trap-jaw ant, Odontomachus coquereli.

Madagascar
Caught!  A small cricket is impaled on the mandibles of a malagasy trap-jaw ant, Odontomachus coquereli.

Madagascar
An Odontomachus meinerti worker threatens the photographer.

Misiones, Argentina
The tip of the trap: the blunt-force weapons of the trap-jaw ant Odontomachus meinerti.

Misiones, Argentina
The tip of the trap: the blunt-force weapons of the trap-jaw ant Odontomachus meinerti.

Misiones, Argentina
The tip of the trap: the blunt-force weapons of the trap-jaw ant Odontomachus meinerti.

Misiones, Argentina
The tip of the trap: the blunt-force weapons of the trap-jaw ant Odontomachus meinerti.

Misiones, Argentina
See photo in original gallery.
all images and text © Alex Wild 2001-2013