Formica ribbeckei Radchenko & Perkovsky, sp. nov., holotype, worker (ANTWEB:casent 0917590) A body, lateral view B body dorso-lateral view C head, maxillary and labial palps, ventral view D head, dorsal view. Scale bars: 1.0 mm (A); 0.5 mm (B–D).

 
 
  Part of: Radchenko AG, Perkovsky EE, Vasilenko DV (2021) Formica species (Hymenoptera, Formicidae, Formicinae) in late Eocene Rovno amber. Journal of Hymenoptera Research 82: 237-251. https://doi.org/10.3897/jhr.82.64599