Genus Harpagoxenus Forel, 1893

Harpagoxenus Forel, 1893: 167.

Type-species: Myrmica sublaevis Nylander, 1849.

Workers and queens. Head large, subrectangular with broad edentate mandibles. Both petiole and postpetiole have strongly developed ventral tooth-like projections. Palp formula 5:3. Antennae 11 segmented.

Male. Similar to Leptothorax acervorum but with ventral projecting tooth on postpetiole as in female castes. Antennae 12 segmented.

This genus contains at most 2 or 3 palaearctic and 1 North American species living in semi-parasitic dulotic relationship with members of the closely related genus Leptothorax