Integrative description of Hypsibius repentinus sp. nov. (Eutardigrada: Hypsibiidae) from Sweden
Creators
- 1. Department of Invertebrate Zoology, Faculty of Biology, St Petersburg State University, 7/9 Universitetskaya Emb., St Petersburg 199034, Russia; Marine Research Laboratory, Zoological Institute, Russian Academy of Sciences, 1 Universitetskaya Emb., St Petersburg 199034, Russia.
- 2. Department of Invertebrate Zoology, Faculty of Biology, St Petersburg State University, 7/9 Universitetskaya Emb., St Petersburg 199034, Russia
Description
A new species of tardigrade from the genus Hypsibius Ehrenberg, 1848 is described from the bottom sediments of a small lake in the central part of Scandinavian Peninsula (Sweden), using an integrative approach, i.e. morphological techniques (light and scanning electron microscopy) combined with a molecular analysis (18S rRNA, 28S rRNA, ITS-2 and COI markers). Hypsibius repentinus sp. nov. belongs to the Hypsibius dujardini species–group and differs from the most similar species of this group in having a second macroplacoid with a definite constriction and in some other morphometric characters. Morphological diagnosis for the Hypsibius dujardini species–group is proposed, and its composition is discussed.
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