Key to AMBLYOPONINAE genera in the Southeastern United States
1        Mandibles, in full face view, long and narrow with coarse bidentate teeth; dark brown in color; over 4 mm in total length
 

Mandibles, in full face view, not narrow with coarse bidentate teeth; color pale yellow; size relatively small, 2-2.5 mm in total length

Note: Until recently, North America species in the genus Stigmatomma were placed in the genus Amblyopone. This change was included in a recent paper by Yoshimura and Fisher (2012): Yoshimura M, Fisher BL (2012) A Revision of Male Ants of the Malagasy Amblyoponinae (Hymenoptera: Formicidae) with Resurrections of the Genera Stigmatomma and Xymmer. PLoS ONE 7(3): e33325. doi:10.1371/journal.pone.0033325