A new unusually small species of the genus Thinodromus Kraatz, 1857 (Coleoptera: Staphylinidae: Oxytelinae) from Thailand

Thinodromus (s. str.) improcerus sp. n. is described from Thailand. New species differs from other species of Thinodromus Kraatz, 1857 by the structure of the aedeagus and by smallest for the known species of the nominotypical subgenus size (body length 2.2 mm). New species is characterized by follows: punctation of the head and pronotum more distinct than those of the elytra; the anterior margin of tergites III–V of the abdomen has 4 characteristic deep round depressions.