Total length of workers less than 4 mm. Clypeus strongly produced as a shelf-like process, which covers the mandibles and carries the antennae. Antennal insertions exposed, closely adjacent, separated by a thin vertical lamella. Promesonotal suture absent on mesosomal dorsum. Hairs lacking, except on the mandibles.
Body surfaces microreticulate, opaque.
Probolomyrmex is distributed in tropical and subtropical areas of the world. There are 13 named species, all of which are very rare. Most are known only from their type-localities. Colonies are small, often including only several individuals. The biology has been scarcely studied.