Proformica

Proformica is a genus of ants in the subfamily Formicinae.

[2] The genus is known from the Palearctic realm, from Mongolia through Central Asia to Spain.

Colonies are small, generally containing a few hundred individuals, with a single queen (monogyne) or multiple ergatogyne queens.

Unique in the tribe Formicini, some species have specialized workers ("honeypot ants") gorged with food; they function as living storage containers.

[3] Four species are host to obligate slave-making ants in the genus Rossomyrmex, with each species forming a coevolving pair:[4]