File:Proleptothorax primitivus F2.jpg

Summary
Figure 2. Proleptothorax primitivus holotype male. Head and mesosoma in dorsal view.

Radchenko, A., Dlussky, G.M., Perfilieva, K. 2018. A new extinct ant genus (Hymenoptera: Formicidae: Myrmicinae) from the Late Eocene Rovno amber – a putative ancestor of the Leptothorax genus group. Myrmecological News, 27: 111-117.