Calohypsibius Thulin, 1928: 238 Revisiting Calohypsibiidae and Microhypsibiidae: Fractonotus Pilato, 1998 and its phylogenetic position within Isohypsibiidae (Eutardigrada: Parachela) Gąsiorek, Piotr Morek, Witold Stec, Daniel Blagden, Brian Michalczyk, Łukasz Zoosystema 2019 2019-03-07 41 6 71 89 62L37 Thulin, 1928 Thulin 1928 [346,638,1939,1965] Eutardigrada Calohypsibiidae Calohypsibius Animalia Parachela 14 83 Tardigrada genus      Calohypsibius Thulin, 1928: 238.  DIAGNOSIS. — Same as for the family Calohypsibiidae.  ETYMOLOGY (NOT PROVIDED IN THE ORIGINAL DESCRIPTION). —After Schuster et al.(1980), from Ancient Greek κά^ος ( kállos) = beauty; derivatives calli-, callo- mean beautiful, pretty. Thulin most likely wanted to highlight the cuticular sculpturing, which is exceptionally complex, rich and unusual among Eutardigrada.  COMPOSITION AND REMARKS Currently only three species, namely  C. maliki Michalczyk & Kaczmarek, 2005( Fig. 4B),  C. ornatus( Richters, 1900)( typespecies; Figs 3C, D, 4A), and  C. schusteri Nelson & McGlothlin, 1996( Fig. 4C), are ascribed to the family. Nevertheless, Bartoš (1940)already described the remarkable variability within European records of the  ornatuscomplex, which raises justifiable concerns as to whether  C. ornatusencompasses only a single species. Further, as suggested by Pilato (1998), it is very likely that the genus comprises many more species than currently recognised. However, a systematic integrative study based on extensive sampling is needed to verify this hypothesis.