Claim: Pseudomyrmex spinicola, a species of red neotropical ants, defend their tree home from herbivory.
Evidence: Pseudomyrmex spinicola is a species of red myrmecophyte-inhabiting neotropical ants which are found only in Nicaragua and Costa Rica. They live in the thorns of a tropical trees like Acacia collinsii or Acacia allenii, feeding on nectaries along with the protein and lipid-rich beltian bodies. In return, the ants actively defend the tree from herbivory and often from competing plants nearby, clearing the forest floor of other seedlings.