Hydrachnidia Krantz, 1978 - water mites Count: [g] 56f;487g [20 Oct 2023] Superfamily Hygrobatoidea Koch, 1842 Count: [g] 12f;234g [20 Oct 2023] Family Pionidae Thor, 1900 Count: [g] 22g [16 Oct 2023] Subfamily Hydrochoreutinae Viets, 1942 [monotypic] Count: [g] 1g [15 Oct 2023] Genus Hydrochoreutes Koch, 1837 Count: -