Aquatic Coleoptera of North Oman, with description of new species of Hydraenidae and Hydrophilidae Author Ribera, Ignacio Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta 37, E- 08003 Barcelona, Spain; Author Hernando, Carles P. O. box 118, E- 08911 Badalona, Catalonia, Spain; e-mail: leptotyphlus @ gmail. com Author Cieslak, Alexandra Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Maritim de la Barceloneta 37, E- 08003 Barcelona, Spain; text Acta Entomologica Musei Nationalis Pragae 2019 2019-06-24 59 1 253 272 journal article 8140 10.2478/aemnp-2019-0021 726682f3-9eac-4961-ac4d-d8b8679e8211 1804-6487 4488950 ABBA2B4F-8B60-41E2-B80B-45861F974B23 Hydroglyphus signatellus (Klug, 1834) Published records. HÁJEK & REITER (2014) . Material examined. Loc. 2: 29 spec. (one used for DNA extraction, voucher No. IBE-RA102); Loc. 8: 1 ♀ ; Loc. 9: 6 spec. ; Loc. 10: 2 spec. ; Loc. 11: 19 spec. ; Loc. 12: 11 spec. ; Loc. 13: 9 spec. ; Loc. 14: 6 spec.