workerless inquiline of P. barbatus & rugosus; probably widespread across host range; multiple gynes probable; produce up to several hundred sexuals; intranidal mating (males do not fly) triggered by summer/fall rains; foundresses find host colonies by following recruitment chemicals of host foragers

Family: Formicidae
Subfamily: Myrmicinae
Species: Pogonomyrmex anergismus (workerless inquiline)
Type Locality: 15 mi E Silver City, New Mexico; 6,900 feet (black dot)