Atopomyrmex

Bolton, B., 1981, A revision of six minor genera of Myrmicinae (Hymenoptera: Formicidae) in the Ethiopian zoogeographical region., Bulletin of the British Museum (Natural History) Entomology 43, pp. 245-307 : 290

Atopomyrmex Polymorphic

Occipital corners evenly rounded.

Ventral surface of alitrunk with a very conspicuous broad deep pit between the hind coxae.

Lower margin of metapleuron without such a groove, the margin rounded and folded in so that the hind coxa appears to rest on the bulla of the metapleural glands (Figs 3,4).

Frontal carinae absent in smallest workers, lengthening as size increases, running back beyond the eyes only in large workers; when present always very broadly separated and distinctly divergent anteriorly (Figs 5 - 7).

Propodeum with a pair of long spines.