The 11-segmented antennae are confirmed within B. scrobiceps, which is distinct from the 9-segmented antennae of Concoctio, but variation occurs within other Amblyoponinae genera such as Prionopelta, in
which antennal segments vary from 8 to 12 (Xu 2000), and this morphological trait could be more labile in
Bannapone as well.