Nestmate transport: a worker trap-jaw ant (Odontomachus sp.) carries a male.

Cambodia (laboratory colony at the University of Illinois)
Anochetus paripungens trap-jaw ant. Note the trigger hair projecting forward from the head. When the trigger is touched, this ant's jaws slam shut with an audible snap.

Northern Territory, Australia
Anochetus paripungens trap-jaw ant. Note the trigger hair projecting forward from the head. When the trigger is touched, this ant's jaws slam shut with an audible snap.

Northern Territory, Australia
Orectognathus versicolor.  The predatory mandibles of trap-jaw ants must also be used for delicate tasks around the nest.  Here, a worker transports a larva.

Brisbane, Queensland, Australia
Odontomachus clarus, the desert trap-jaw ant.

Portal, Arizona, USA
Odontomachus cephalotes

Cape York Peninsula, Queensland, Australia
Orectognathus versicolor is unusual for a trap-jaw ant in having a major worker caste (the large ant at center).  The function of majors in this species remains unknown; other Orectognathus lack majors.

Brisbane, Queensland, Australia
Orectognathus versicolor.  The predatory mandibles of trap-jaw ants must also be used for delicate tasks around the nest.  Here, a worker transports a larva.

Brisbane, Queensland, Australia
Orectognathus versicolor

Brisbane, Queensland, Australia
Anochetus paripungens trap-jaw ant. Note the trigger hair projecting forward from the head. When the trigger is touched, this ant's jaws slam shut with an audible snap.

Northern Territory, Australia
Anochetus paripungens trap-jaw ant. Note the trigger hair projecting forward from the head. When the trigger is touched, this ant's jaws slam shut with an audible snap.

Northern Territory, Australia
Anochetus paripungens trap-jaw ant. Note the trigger hair projecting forward from the head. When the trigger is touched, this ant's jaws slam shut with an audible snap.

Northern Territory, Australia
See photo in original gallery.
all images and text © Alex Wild 2001-2013