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 denarius Perkins Fig. 4 Hydrochus denarius Perkins 2019c: 46 Originally described from Venezuela . Habitus and male genitalia images are given in Perkins (2019c) . New locality data and deposition records for Brazil and Paraguay are given below. Material examined (22): Brazil : Bahia , Abaíra , Pico do Barbado , W of Catolés ( -13.29053 -41.90489 ), 1705m , 26.ii.2018 , Pools and stream near summit saddle, leg. Benetti & Team, BR 18-0226-01A (13 INPA , SEMC ) ; Rondonia , Brazil , Rondonia , Nova União , Vale das Cachoeiras ( -10.91764 -62.377 ), 359m , 10.vii.2018 , margin of rocky stream with tall waterfall, leg. Short, BR 18-0710-02B (8 INPA , SEMC ) . Paraguay : Paraquari, P.N . Yvycul , Arroya Mina , 640 ft. , 26.vi.2006 , leg. W.D. Shepard (WDS-A-1700) (1 SEMC ) .