Taxonomy of water beetles in the genus Hydrochus Leach, 1817, from Bolivia, Brazil and Paraguay (Coleoptera: Hydrochidae) Author Perkins, Philip D. text Zootaxa 2021 2021-06-28 4994 1 1 93 journal article 10.11646/zootaxa.4994.1.1 1175-5326 5043261 107FCA64-345F-40A4-99D3-5C1441EEAD93 Hydrochus formosus Perkins Figs. 4 , 60 Hydrochus formosus Perkins 2019c: 17 Originally described from Venezuela . Habitus and male genitalia images are given in Perkins (2019c) . One new record is from Brazil . Material examined: Brazil : Roraima , Bonfim , BR-401, c. 26 km NE of Boa Vista , 2m ( 2 56.191’N , 60 28.017’W ), 92 m . , 12.i.2018 , marsh, leg. Short, BR 18-0112-06A (1 INPA ) .