Pseudomyrmex apache Northern California, USA
Pseudomyrmex spinicola acacia ants guarding a nest entrance. This species has a painful sting and a much more aggressive temperment than most other Pseudomyrmex, an effective deterrent to large vertebrate herbivores. Chiriqui, Panama
Simopelta sp. nr. pergandei, nest emigration across leaf litter. Parque Nacional Henri Pittier, Venezuela
