Hydrodessus surinamensis Young, 1970

Material examined. Brazil: Amazonas State, Barcelos County “ Rio Demeni depois Com. Samauma ” (00º20’42’’S 62º47’25”W); 30 m a.s.l.; 09.viii.2009; leg. N. Hamada ; A. Pes, R. Keppler, C. Azevedo; C. Monteiro, (INPA, 1). “Igarapé Serrinha” (00º25’25”N 63º23’47”W); 36 m a.s.l.; 05.viii.2009; leg. N. Hamada, A. Pes, R. Keppler, C. Azevedo, C. Monteiro (INPA, 6) . “ Rio Aracá, acima do local do Barco Ancorado ” (00º24’39”N 63º23’12”W); 69 m a.s.l.; 06.viii.2009; leg. N. Hamada, A. Pes, R. Keppler, C. Azevedo, C. Monteiro (INPA, 4) . “ Rio Aracá, pensilvania” (00º24’54”S 062º56’08’’W); 25.ix.2014 ; A. Pes, G. Gomes, D. Colpani (INPA, 1). Presidente Figueiredo County, “Sitio Corredeira Santo Amaro” (02º02’21”S 59º50’43”W); 18.viii.2011; leg. A. Pes (INPA, 1) . “ Igarapé Lajes ” (01º59’38’’S 60º01’40’’W); 08.ii.2000; leg. A. Pes (INPA, 1) . “ Igarapé Pantera ” (02º02’31”S 059º50’55”W); 04.vii.2000; leg. A. Pes, (INPA, 3) . Roraima State, Amajari County, “ Serra do Tepequém, Igarapé Preto, Cachoeira Laje Preta ” (3º36.38’N 61º42.88’W); stream margins in forested área, below seeps; 618 m a.s.l.; 14.i.2018; leg. A. Short, C. Benetti, L. Santana ; BR18-0114-04C (SEMC, 20).

Distribution. Brazil * (Amazonas, Roraima), Suriname (Brokopondo, Sipaliwini) and Venezuela (Amazonas) (Miller 2016) (Fig. 15).

Habitat. This species has been collected from waterholes in a forest stream, tiny forest pools, large detrital pools, large sandy creek, and along a stream (Miller 2016). In this study it was collected in rapids, shaded forest stream at 30 m a.s.l., below seepage at 618 m a.s.l., and from light traps.