Skarżyński, D. and Babenko, A. 2009. Description of two new species of <i>Hypogastrura</i> Bourlet, 1839 of the <i>H. crassaegranulata</i> group (Collembola: Hypogastruridae) from the Caucasus, with notes on some related species. Entomologica Fennica. 20, 4 (Dec. 2009), 275–280. DOI:https://doi.org/10.33338/ef.84490.