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
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
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
Solenopsis invicta

Frías, Santiago de Estero, Argentina
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
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
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
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
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all images and text © Alex Wild 2001-2013