Pogonomyrmex laticeps-group

Workers of the P. laticeps-group can be recognized by the following characters: (1) first gastric tergite smooth and shining to moderately coriarious, but lacking fine, dense longitudinal striae, (2) head wider than long, (3) interrugal spaces on dorsum of mesosoma smooth to moderately coriarious, sub-shining to shining (punctuation or granulation lacking), and (4) superior propodeal spines well developed, inferior propodeal spines poorly developed or lacking. Morphological characters do not separate out these three species as well as those for some other species groups. The smooth interrugal spaces seem to be the most distinct character to diagnose P. laticeps-group species.