When threatened, a Polyrhachis militaris worker hunkers down with her protective spines thrust upward.

Kibale forest, Uganda
An Amblyopone australis worker reacts to disturbance by playing dead. A few seconds after this photo was taken, she perked up and walked away.

Cape Tribulation, Queensland, Australia
Papilio polyxenes - eastern black swallowtail - caterpillar with defensive osmeterium everted.

Urbana, Illinois, USA
When threatened, a Polyrhachis militaris worker hunkers down with her protective spines thrust upward.

Kibale forest, Uganda
When threatened, a Polyrhachis militaris worker hunkers down with her protective spines thrust upward.

Kibale forest, Uganda
When threatened, a Polyrhachis militaris worker hunkers down with her protective spines thrust upward.

Kibale forest, Uganda
See photo in original gallery.
all images and text © Alex Wild 2001-2013