 Most male specimens collected have two tibial spurs (spines located on the distal end of the tibia); the first spur is a long calcar and the second spur is short and thick.Adults have a stridulatory organ on the ventral side of the abdomen – unlike all other hymenopterans in which such organs are located dorsally.In all castes, these ants have six maxillary palps (palps that serve as organs of touch and taste in feeding) and four labial palps (sensory structures on the labium), a highly primitive feature.