Hydrodessus is a genus of beetles in the family Dytiscidae, containing the following species: \n* Hydrodessus amazonensis Spangler, 1966 \n* Hydrodessus angularis Young, 1970 \n* Hydrodessus biguttatus (Guignot, 1957) \n* Hydrodessus brasiliensis (Guignot, 1957) \n* Hydrodessus fragrans Spangler, 1985 \n* Hydrodessus jethoeae Makhan, 1994 \n* Hydrodessus nanayensis Spangler, 1966 \n* Hydrodessus octospilus (Guignot, 1957) \n* Hydrodessus peloteretes Spangler, 1985 \n* Hydrodessus pereirai (Guignot, 1957) \n* Hydrodessus phyllisae Spangler, 1985 \n* Hydrodessus rattanae Makhan, 1994 \n* Hydrodessus robinae Spangler, 1985 \n* Hydrodessus siolii J.Balfour-Browne, 1953 \n* Hydrodessus soekhnandanae Makhan, 1994 \n* Hydrodessus spanus Spangler, 1985 \n* Hydrodessus surinamensis Young, 1970