Genus Formicoxenus ^HNS Mayr, 1855

Formicoxenus ^HNS Mayr, 1855:413.

Type-species: Myrmica nitidula Nylander ^HNS, 1846.

Worker and queen. Small, shining, narrow bodied ants. Antennae 11 segmented; palp formula 4:3. Postpetiole with peg-like ventral process directed forward.

Males. Apterous, ergatoid without wing sclerites. Antennae 12 segmented. Postpetiole as in female castes.

This is a palaearctic genus with 2 species only; a similar species Leptothorax diversipilosus M. Smith ^HNS, occurs in North America.