Arboreal Ants: Life in the Treetops - Alex Wild Photography
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Not all of the thorns on a swollen-thorn Acacia house the ants' larvae, but those that do are heavily guarded.  Here, Pseudomyrmex spinicola patrol a nest entrance, ready to use their stings if the photographer approaches too close.  

Chiriqui, Panama.

Not all of the thorns on a swollen-thorn Acacia house the ants' larvae, but those that do are heavily guarded. Here, Pseudomyrmex spinicola patrol a nest entrance, ready to use their stings if the photographer approaches too close. Chiriqui, Panama.

Pseudomyrmex spinicolaPseudomyrmaPseudomyrmexPseudomyrmecinaeformicidaeant plantants and plantsecologymutualismcoevolutionadaptationevolutionAcaciatropical ecologyinsectsinsectswollen thorn acaciabotanysciencenestant nestguardingguards