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Kaczmarek, Łukasz and 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 (Oct. 2009), 60–68. DOI:https://doi.org/10.11646/zootaxa.2275.1.4.