Pogonomyrmex mayri-group

Pogonomyrmex mayri consists of a monotypic group in which all three castes are easily distinguished from congeners. Workers have: (1) deeply incised sculpturing on head and mesosoma (similar to that of P. mendozanus), (2) antennal scapes that are densely granulate-punctate with a strongly flattened base, and (3) anterior margin of clypeus concave with a small medial tooth. The queen is ergatoid, the ocelli are indistinct or absent, and the postpetiole is notably enlarged compared to workers. Males are distinguished by: (1) an elongate neck, (2) postpetiole more than twice as long as wide, and (3) petiole and peduncle not differentiated, forming one broadly rounded segment.