Kaczmarek, Łukasz & Michalczyk, Łukasz (2009) Redescription of Hypsibius microps Thulin, 1928 and H. pallidus Thulin, 1911 (Eutardigrada: Hypsibiidae) based on the type material from the Thulin collection. Zootaxa, 2275 (1), 60–68.