Median portion of clypeus carinate, produced anteriorly into a lobe or point. Lobes of frontal carinae small, in dorsal view usually only partially covering the condylar bulbs of the antennal scapes. Middle and hind tibiae each with one large pectinate and one small simple spur.
Claws pectinate, but incompletely so in some species.
Gaster weakly impressed between first and second segments. Basically an oriental group, common and varied in east Africa and Asia. Poorly represented in Guinea, where the two captures made by Lamotte appeared to be new highly striated races of species common to Congo and Rhodesia. It is a general rule with more primitive ants that the mountain races are more striated than those of the lowlands, especially on the sides of the epinotum and the petiole. Mandibles short, usually quite stout, with convex inner margins, capable of closing against clypeus 22 12.