Copelatus is a large genus of small diving beetles. There are some 470 described species in the genus, found worldwide, but they are most diverse in tropical South America, Africa and South-East Asia.
Maurice Auguste Régimbart was a French entomologist who specialised in Coleoptera, particularly Dytiscidae, Gyrinidae and Hydrophilidae. Regimbart worked on expedition material collected mainly from French, Italian and Belgian colonies. He was a member of the Société entomologique de France.
Gyrinus is a genus of small aquatic whirligig beetles in the family Gyrinidae native to the Palearctic, the Near East, the Nearctic, North Africa, Asia and Australia.
Laccophilus is a genus of water beetle found in nearly every temperate or tropical region in the world including but not limited to Europe, the Near East, the Nearctic, North Africa and the Oriental region. It contains the following species:
Hydaticus is a genus of predatory water beetle belonging to the family Dytiscidae. Hydaticus can be found throughout most of the world. There are 150 described species and 12 subspecies in two subgenera in the genus Hydaticus.
Cybister, is a genus of beetle in family Dytiscidae. They are found in much of the world, including all continents except Antarctica. As of 2021 there are 96 species and 9 additional subspecies among four subgenera in the genus.
Dineutus is a genus of beetles in the family Gyrinidae, the whirligig beetles. They are 9 to 15 millimeters long. Their elytra are smooth, shallowly lined, or grooved.
Orectochilus is a genus of beetle native to the Palearctic, the Near East and North Africa. It contains the following species:
Hydrophilus is a genus of beetles in the family Hydrophilidae, the water scavenger beetles. There are 50 species in three subgenera in the genus: Hydrophilus, Dibolocelus, and Temnopterus.
Prodaticus is a subgenus of beetles of the genus Hydaticus in the family Dytiscidae. These 143 species are in the subgenus Prodaticus:
Porrorhynchus is a genus of beetles in the family Gyrinidae, containing the following species:
Enhydrus is a genus of beetles in the family Gyrinidae, containing the following species:
Macrogyrus is a genus of beetles in the family Gyrinidae, containing the following species:
Aulonogyrus is a genus of beetles in the family Gyrinidae, containing the following species:
Metagyrinus is a genus of beetles in the family Gyrinidae, containing the following species:
Gyretes is a genus of beetles in the family Gyrinidae, containing the following species:.
Orectogyrus is a genus of beetles in the family Gyrinidae, containing the following species:
Hydrocanthus is a genus of beetles in the family Noteridae, containing the following species:
Suphisellus is a genus of beetles in the family Noteridae, containing the following species:
Gyrininae is a subfamily of ground and water beetles in the family Gyrinidae. There are at least 60 described species in Gyrininae.
