Hydrodessus ducke sp. n. and new records of other species of the genus (Coleoptera, Dytiscidae, Bidessini) Author Benetti, Cesar J. Author Michat, Mariano C. Author Hamada, Neusa text Zootaxa 2020 2020-02-24 4743 1 47 60 journal article 23833 10.11646/zootaxa.4743.1.4 71f9dd38-f9b3-432d-87d0-f3428ac1f0be 1175-5326 3687626 63D7BE74-E248-4D1E-92A7-D5288170DB13 Hydrodessus keithi Miller, 2016 Material examined. Brazil : Amapá State , “ Tartarugalzinho , Igarapé do Henrique , BR 156” ( 01º45’56”N 050º52’40”W ) ; - 1 m a.s.l. ; 07.viii.2011 ; leg. A. Pes , P. Cruz , A. Fernandes , N. Hamada ( INPA , 1) . Rondônia State , “ Rio Pacaás Novos , confluência com rio Negro Ocaia ” ( 11º11’04’’S 64º51’16’’W ) ; 06.ix.1999 ; leg. N. Hamada , U. Barbosa ( INPA , 1) . Distribution. Brazil ( Amapá *, Pará, Rondônia *), Colombia ( Meta ) and Ecuador ( Napo , Pastaza ) ( Miller 2016 ) ( Fig. 17 ). Habitat. This species has been collected from blacklight traps ( Miller 2016 ). Specimens from Brazil ( Amapá ) were collected in streams at - 1 m a.s.l, 25ºC, 6.7 pH, 13 µScm-1 conductivity.