Hydrochus farsicus sp. n. from Iran and notes on other Palearctic species of the genus (Coleoptera: Hydrophiloidea: Hydrochidae) Author Hidalgo-Galiana, Amparo Author Jäch, Manfred A. Author Ribera, Ignacio text Zootaxa 2010 2344 61 64 journal article 10.5281/zenodo.193349 9acae37a-ea05-4431-9503-bbe7f459c2ab 1175-5326 193349 Hydrochus smaragdineus Fairmaire, 1879 Hydrochus angustatus bicolor Rey, 1885 syn.n. Material studied. Lectotype (of Hydrochus angustatus bicolor Rey, 1885 ), male (Muséum d’Histoire Naturelle, Lyon): “ Hydrochus / bicolor Rey [male symbol] / mus. Lyon. [red handwritten label]”; “Museon Den Haag / Hydrochus [male symbol] / bicolor Rey [hdw] / det. A. L. van Berge / Henegouwen 1986”; “ lectotype . Van Berge / Henegouwen 1985 [red label, hdw]”. Remarks. The study of the lectotype of H. angustatus bicolor revealed that its aedeagus is identical to that of H. smaragdineus Fairmaire (in the interpretation of Valladares, 1995 ), and thus it has to be considered a subjective junior synonym and not a subspecies of Hydrochus angustatus Germar, 1824 .