A checklist of halacarid and hydrachnid mites (Acari, Halacaridae & Hydrachnidia) associated with sponges (Porifera) Author Chatterjee, Tapas text Zootaxa 2021 2021-11-29 5072 2 101 129 journal article 3184 10.11646/zootaxa.5072.2.1 37781dcd-ffff-4c1e-9483-fb726b42b440 1175-5326 5733656 F11C5EFE-8B45-4F58-B7E9-741D27EB47B6 Unionicola ( Hexatax ) gilani Hevers, 1984 Report associated with sponges: This species was mentioned by Crowell (1990) as developmentally associated with freshwater sponges in the Northern Hemisphere. Remarks: This species belongs to the ‘ U. crassipes —complex’ of sponge-mite. This species was reported in Gilan Province , Iran ( Hevers 1984 ). It needs further study (emphasizing on developmental study) of this mite to get a better idea about association with freshwater sponges.