Pseudomyrmex is a genus of wasp-like, stinging ants. Certain Neotropical Pseudomyrmex – tree ants – diligently defend the trees in which they reside. Triplaris, the ant tree, provides room and board for the tree ants, which prune any foreign seedlings they find near the tree. The tree ant is a protector of and gardener for its ant tree.
These ants are very protective of their host tree. It doesn’t matter if it’s an animal or another plant species – they’re going to attack it. ~ biologist Jorge Vivanco