Acerentulus bulgaricus sp. nov.: Holotype A habitus B lateral part of head C hind part of head D maxillary gland E maxillary palpus F labial palpus G–I exterior view of foretarsus. Scale bars: 100 µm (A), 10 µm (B–I).

  Part of: Shrubovych J, Georgiev DG, Fiera C (2019) A new species of Acerentulus Berlese, 1908 (Protura, Acerentomata, Acerentomidae) from Bulgaria with a revised key to the confinis group. ZooKeys 876: 27-38.