For Atta mexicana, a tropical leafcutter ant that lives here at the northernmost limit of its range, the rain means it’s almost time to mate. Few people ever see a mating swarm, which happens before ...

The species of harvesting ants observed were, Pheidole megacephala, Atta structor, A. barbara, and a larger and differently coloured variety of the last. Atta structor is found over a large part ...