A new species of Berlese, 1908 (Protura, Acerentomata, Acerentomidae) from Bulgaria with a revised key to the group.

A new species, ., belonging to the group, is described from Bulgaria. This species is characterized by long foretarsal sensilla and , the posterior position of foretarsal seta δ, the presence of seta on abdominal tergites II-VII and seta on abdominal tergite VII, possession of eight anterior setae on abdominal tergite VII and composed pores on sternite VI. The new species differs from all members of the group in possessing setae on tergites II-VII. Otherwise it is similar in body chaetotaxy and porotaxy to three species of the group, , and . The identification key to 22 species belonging to group is revised.