Agonum tulliae sp. n. is described from the Sila Massif upland in Calabria, Italy. This species is similar to Agonum (Olisares) sexpunctatum (Linné, 1758) as far as the external morphology is concerned, but it is easy to distinguish by the colour pattern, the shape of pronotum, and at best by the morphology of male genitalia. The study includes some remarks about the habitat and ecology of the new species. It lives only in the eastern part of the Sila massif and occupies the southernmost part of the distribution area of the Agonum sexpunctatum (Linné, 1758) complex in Italy.
Carabidae taxonomy; Ecology; Biogeography; Sphagnum bogs