Taxonomy of Central American water beetles in the genus Hydrochus Leach, 1817 (Coleoptera: Hydrochidae) Author Perkins, Philip D. text Zootaxa 2021 2021-05-21 4974 3 459 503 journal article 6214 10.11646/zootaxa.4974.3.2 5b4eaeb3-5722-4021-84ad-125ccd80855f 1175-5326 4777839 1BD6220B-7540-4A12-B3D2-5EDC1A3B7DD8 Hydrochus piroei Makhan Fig. 33 Hydrochus piroei Makhan, 1992: 97 . Originally described from Suriname , and recently reported from Venezuela ( Perkins, 2019c ) and Ecuador ( Perkins, 2020b ), the following specimen records are from Panama . Images of the habitus and male genitalia, and detailed description of the male genitalia of a specimen from Venezuela are given in Perkins (2019c) . Material examined (13) : Panama : Barro Colorado Island , 24.v.1964 , leg. WD & SS Duckworth (1 NMNH ) ; Trinidad River , 21.v.1911 , leg. August Busck (1 NMNH ) ; Canal Zone , Barro Colorado Island , 5.vi.1977 , leg. Nivel (1 NMNH ) ; Panama , Tocumen , 16-19.vi.1970 , leg. Diego Navas (2 NMNH ) ; same locality, 13-17.vii.1970 , leg. Diego Navas (1 CNC ) ; same locality, 7-11.ix.1970 , leg. Diego Navas (7 NMNH ) . Remarks. I have examined the holotype , including the male genitalia, of H. piroei .