Recently was published excellent paper of Fominykh, Zamotajlov, Khomitskiy & Titarenko, 2020 "Contribution to the knowledge of Carabus (Lipaster) stjernvalli Mannerheim, 1830 in the Caucasus, with description of two new subspecies (Coleoptera: Carabidae: Carabini)", "dedicated to study of variability of species Carabus (Lipaster) stjernvalli", although, in fact, the sole purpose of the work was to describe new taxa in order to sell their Paratypes.
But, this work perfectly proves that there are no differences between the previously described subspecies, as well as the newly described ones. New synonymy in the species Carabus (Lipaster) stjernvalli proposed here 12.2.2020 by A. Anichtchenko