postpetiole shape
postpetiole high with ventral bulge

The postpetiole, in profile view, is as high as petiole and with a distinct ventral bulge. Used in Antkey to separate Cardiocondyla emeryi, Cardiocondyla obscurior and Cardiocondyla wroughtonii from all other Cardiocondyla species.
postpetiole sides angulate

In dorsal view, the sides of the postpetiole are angulate giving the postpetiolar disc a hexagonal appearance. Used in Antkey to separate Cardiocondyla kagutsuchi and Cardiocondyla mauritanica from Cardiocondyla venustula.
postpetiole low lacking ventral bulge

The postpetiole, in profile view, is lower than petiole and lacking a distinct ventral bulge. Used in Antkey to separate Cardiocondyla kagutsuchi, Cardiocondyla mauritanica and Cardiocondyla venustula from all other Cardiocondyla species.
postpetiole not swollen

In dorsal view, the postpetiole not appearing swollen, not wider than long and not conspicuously broader than the petiole. Used in Antkey to separate various myrmicine genera from Cardiocondyla.
postpetiole spines rounded

In dorsal view, the sides of the postpetiole are rounded, giving the postpetiolar disc a more ovoid than hexagonal appearance. Used in Antkey to separate Cardiocondyla venustula from Cardiocondyla kagutsuchi and Cardiocondyla mauritanica.
pospetiole swollen

In dorsal view, the postpetiole appearing swollen, wider than long and conspicuously broader than the petiole. Used in Antkey to separate Cardiocondyla from various myrmicine genera.
postpetiole as high as petiole

postpetiole as high as petiole and with a distinct ventral bulge
postpetiole not swollen

postpetiole not swollen relative to petiole
postpetiole sides angulate

postpetiole sides in dorsal view angulate (Cardiocondyla)
postpetiole sides rounded

postpetiole sides in dorsal view rounded (Cardiocondyla)