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 Hydraena ( Phothydraena ) putearius Jäch & Díaz, 2000 Published records. JÄCH & DÍAZ (2000) . Material examined. Loc. 1: 13 spec. (1 ♁ used for DNA extraction, voucher No.IBE-RA95, sequences published in ABELLAN & RIBERA 2011 ; ABELLÁN et al. 2013 ; TRIZZINO et al.2013 ; VILLASTRIGO et al. 2019 ); Loc. 2: 5 spec. ; Loc. 3: 55 spec. ; Loc.4: 5 spec. ; Loc.5: 14 spec. ; Loc. 6: 6 spec. ; Loc. 7: 9 spec. ; Loc. 8: 60 spec. ; Loc. 9: 2 spec. ; Loc. 10: 4 spec. ; Loc. 12: 69 spec. (1 ♁ used for DNA extraction, voucher No. IBE-RA706).