Hydroglyphus is a genus of beetles in the family Dytiscidae, containing the following species: \n* Hydroglyphus aethiopicus (Régimbart, 1907) \n* Hydroglyphus amamiensis (Satô, 1961) \n* Hydroglyphus angularis (Klug, 1834) \n* Hydroglyphus angulolineatus (Guignot, 1956) \n* Hydroglyphus annamita (Régimbart, 1889) \n* Hydroglyphus apertus (Guignot, 1941) \n* Hydroglyphus baeri (Régimbart, 1895) \n* Hydroglyphus balkei Hendrich, 1999 \n* Hydroglyphus basalis (W.J. Macleay, 1871) \n* Hydroglyphus bilardoi Biström, 1986 \n* Hydroglyphus borkuanus (Bruneau de Miré & Legros, 1963) \n* Hydroglyphus capitatus (Régimbart, 1895) \n* Hydroglyphus circulatus (Régimbart, 1889) \n* Hydroglyphus confusus (Klug, 1834) \n* Hydroglyphus crassifrons (Régimbart, 1903) \n* Hydroglyphus daemeli (Sharp, 1882) \n*