Podomyrma gratiosa fighting with Crematogaster.

Naracoorte, South Australia
A Podomyrma gratiosa worker forages on a tree trunk.  These large ants are almost exclusively arboreal, and their swollen legs contain muscles to help them grip the bark firmly.

Naracoorte, South Australia
A Podomyrma gratiosa worker forages on a tree trunk.  These large ants are almost exclusively arboreal, and their swollen legs contain muscles to help them grip the bark firmly.

Naracoorte, South Australia
A large Podomyrma gratiosa tree ant attacks a column of smaller Crematogaster workers that pass too close to her nest.  The Crematogaster fight back, and even though the large size and heavy armor of the Podomyrma allow it a one-on-one advantage, the superior numbers of Crematogaster give the smaller ants the edge in this fight.

Naracoorte, South Australia
A Podomyrma gratiosa worker forages on a tree trunk.  These large ants are almost exclusively arboreal, and their swollen legs contain muscles to help them grip the bark firmly.

Naracoorte, South Australia
Podomyrma gratiosa fighting with Crematogaster.

Naracoorte, South Australia
Brute force versus chemical weaponry: the heavily armored Podomyrma gratiosa dispatches small Crematogaster with her powerful mandibles, but the smaller ants use strong defensive chemicals in return, coating their adversary with a thick acrid foam exuded from their abdomens.

Naracoorte, South Australia
A large Podomyrma gratiosa tree ant attacks a column of smaller Crematogaster workers that pass too close to her nest.  The Crematogaster fight back, and even though the large size and heavy armor of the Podomyrma allow it a one-on-one advantage, the superior numbers of Crematogaster give the smaller ants the edge in this fight.

Naracoorte, South Australia
Podomyrma gratiosa fighting with Crematogaster.

Naracoorte, South Australia
Podomyrma gratiosa fighting with Crematogaster.

Naracoorte, South Australia
Podomyrma gratiosa fighting with Crematogaster.

Naracoorte, South Australia
Podomyrma gratiosa fighting with Crematogaster.

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