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 Thysanarthria wadicola Fikáček & Liu, 2019 Published records. HEBAUER (1997 , 2001 , as T. sulcata (Chiesa, 1967)) ; FIKÁČEK & LIU (2019) . Material examined. Loc. 8: 3 ♀♀ ( paratypes , CCHB , IBEB ), 1 spec. ( paratype , SEMC ,corresponding to voucher SLE0127 in SHORT & FIKÁČEK 2013 ); Loc. 9: 1 ♀ ( paratype , IBEB ). Notes. The species was recorded from Oman by HEBAUER (1997 , 2001 ) as T. sulcata , and from the UAE and Iran by FIKÁČEK et al. (2010) with some doubts on its identity. A recent revision of the genus has shown that T. sulcata is a synonym of T. championi (Knisch, 1924) , widespread in central and south Asia ( FIKÁČEK & LIU 2019 ). The Arabian material corresponds to a species newly described by FIKÁČEK & LIU (2019) , T. wadicola . Specimens were found in the gravelly shores of wadis, in a microhabitat similar to that of some species of the related genus Chaetharthria. Enochrinae