| Subfamily | Agabinae
Thomson, 1867
| 13
1108 | Genera
Species |
| Subfamily | Colymbetinae
Erichson, 1837
| 19
499 | Genera
Species |
| Subfamily | Copelatinae
Van den Branden, 1885 ⇒ Copelatini
| 9
1128 | Genera
Species |
| Subfamily | Coptotominae
Branden, 1885
| 1
14 | Genus
Species |
| Subfamily | Cybistrinae
Sharp, 1880
| 8
302 | Genera
Species |
| Subfamily | Dytiscinae
Leach, 1815
| 17
1122 | Genera
Species |
| Subfamily | Hydrodytinae
Miller, 2001
| 2
4 | Genera
Species |
| Subfamily | Hydroporinae
Aubé, 1836
| 162
5024 | Genera
Species |
| Subfamily | Laccophilinae
Gistel, 1856
| 15
700 | Genera
Species |
| Subfamily | Lancetinae
Branden, 1885
| 1
40 | Genus
Species |
| Subfamily | Liadytiscinae ♰
Prokin & Ren, 2010
| 5
10 | Genera
Species |
| Subfamily | Matinae
Van den Branden, 1885
| 3
18 | Genera
Species |
| Subfamily | Palaeogyrininae ♰
Schlechtendal, 1894
| 3
7 | Genera
Species |
| Genus | Acathodes
Seidlitz, 1887 ⇒ Agabus
| 0 | Species |
| Genus | Acillius ⇒ Acilius
| 3 | Species |
| Genus | Acilus
| 1 | Species |
| Genus | Actobaena
Gistel, 1856
| 0 | Species |
| Genus | Afronectes
Müller, 1942
| 0 | Species |
| Genus | Agabidius
Seidlitz, 1887
| 0 | Species |
| Genus | Agabinectes
Guignot, 1933
| 0 | Species |
| Genus | Agaporomorpha
| 0 | Species |
| Genus | Agraphis
Guignot, 1954
| 3 | Species |
| Genus | Allodesus
| 1 | Species |
| Genus | Allogabus
Guignot, 1952
| 0 | Species |
| Genus | Allonychus
Zaitzev, 1905
| 0 | Species |
| Genus | Allophydrus
Zimmermann, 1930
| 0 | Species |
| Genus | Alocomerus
Brinck, 1945
| 0 | Species |
| Genus | Anagabus
Jakovlev, 1897
| 4 | Species |
| Genus | Anisomera
Brullé, 1834 ⇒ Anisomeria
| 21 | Species |
| Genus | Anodochilus
Gemminger & Harold, 1868
| 0 | Species |
| Genus | Apriophorus
Guignot, 1938
| 0 | Species |
| Genus | Asternus
Guignot, 1931
| 0 | Species |
| Genus | Aubehydrus
Guignot, 1942
| 1 | Species |
| Genus | Aulacodytes
Guignot, 1938
| 0 | Species |
| Genus | Australonectes
Guéorguiev, 1972
| 0 | Species |
| Genus | Austrelatus
Shaverdo, Hájek, Hendrich, Surbakti, Panjaitan & Balke, 2023
| 35 | Species |
| Genus | Badynectus
Seidlitz, 1872
| 0 | Species |
| Genus | Barrethydrus
| 1 | Species |
| Genus | Bartheus
Houlbert, 1934
| 0 | Species |
| Genus | Bidessini
Sharp, 1880
| 0 | Species |
| Genus | Bifurcitus
Brinck, 1945 ⇒ Megadytes
| 0 | Species |
| Genus | Bistictus
Guignot, 1942 ⇒ Nebrioporus
| 0 | Species |
| Genus | Brachybidessus
Gschwendtner in Titschack, 1954
| 0 | Species |
| Genus | Brinckius
Guignot, 1957
| 4 | Species |
| Genus | Calliporus
Adám, 1996 ⇒ Bidessus
| 0 | Species |
| Genus | Carabhudrus
| 1 | Species |
| Genus | Carinonectes ♰
Vazirani, 1976
| 0 | Species |
| Genus | Circinoporus
Guignot, 1945
| 0 | Species |
| Genus | Colymbetopsis
Handlirsch, 1906
| 1 | Species |
| Genus | Colymbinectes
Falkenström, 1936
| 1 | Species |
| Genus | Cybisteter
Bedel, 1880
| 0 | Species |
| Genus | Cybsiter
| 1 | Species |
| Genus | Cymatopterus
Boisduval & Lacordaire, 1835 ⇒ Colymbetes
| 13 | Species |
| Genus | Derographus
Portevin, 1929
| 0 | Species |
| Genus | Deroncectes
| 1 | Species |
| Genus | Deuteronectus
| 2 | Species |
| Genus | Dichodytes
Thomson, 1886
| 0 | Species |
| Genus | Dichonectes
Guignot, 1945
| 0 | Species |
| Genus | Diticus
Goldfuss, 1820 ⇒ Dytiscus
| 0 | Species |
| Genus | Dryephorus
Guignot, 1950
| 0 | Species |
| Genus | Dyticus
Geoffroy, 1762 ⇒ Dytiscus
| 58 | Species |
| Genus | Electruphilus
Balker, Toledo & Hendrich, 2019
| 1 | Species |
| Genus | Eunectes
Erichson, 1832 ⇒ Eretes
Anacondas | 12 | Species |
| Genus | Falloporus
Wolfe & Malta, 1981
| 0 | Species |
| Genus | Gabinectes
Guignot, 1931
| 0 | Species |
| Genus | Glessaria ♰
Koch & Berendt, 1854 ⇒ Derovatellus
| 1 | Species |
| Genus | Graphothorax
Motschoulsky, 1853
| 2 | Species |
| Genus | Gschwendtnerhydrus
Brinck, 1945
| 0 | Species |
| Genus | Gueorguievtes ♰
Vazirani, 1976
| 0 | Species |
| Genus | Guignotites
Brinck, 1944
| 0 | Species |
| Genus | Heteroelytrus
Adám, 1993 ⇒ Acilius
| 0 | Species |
| Genus | Heterostethus
Falkenström, 1938
| 0 | Species |
| Genus | Hintonella
Young, 1981
| 0 | Species |
| Genus | Hogrus
Zubkov, 1837 ⇒ Eretes
| 0 | Species |
| Genus | Homaeolytrus
Gobert, 1874
| 0 | Species |
| Genus | Homeodytes
| 3 | Species |
| Genus | Homoeolytrus
Gobert, 1874 ⇒ Acilius
| 0 | Species |
| Genus | Hughbosdinius
Spangler, 1981 ⇒ Bidessodes
| 1 | Species |
| Genus | Hydaticinus
Guignot, 1950 ⇒ Hydaticus
| 0 | Species |
| Genus | Hydatobius
Gistl, 1834
| 0 | Species |
| Genus | Hydatonychus
Kolbe, 1883
| 1 | Species |
| Genus | Hydatoporus
Gistel, 1856
| 1 | Species |
| Genus | Hydronectes
Gistel, 1834 ⇒ Orectochilus
| 0 | Species |
| Genus | Hydroporidius
Guignot, 1949
| 0 | Species |
| Genus | Hydroporomorpha
Hope, 1838
| 5 | Species |
| Genus | Hyobius
Gistel, 1856
| 0 | Species |
| Genus | Hyphidrus
Sturm, 1826 ⇒ Hyphydrus
| 0 | Species |
| Genus | Hypoclypeus
Guignot, 1950 ⇒ Clypeodytes
| 0 | Species |
| Genus | Hypodes
Watts, 1978 ⇒ Tiporus
| 6 | Species |
| Genus | Hypodytes
Guignot, 1938 ⇒ Clypeodytes
| 0 | Species |
| Genus | Hypoplatynectes ♰
Guéorguiev, 1972
| 0 | Species |
| Genus | Icmaleus
Gistel, 1856
| 0 | Species |
| Genus | Idiolybius
des Gozis, 1886
| 0 | Species |
| Genus | Ilybidius
Guignot, 1948
| 0 | Species |
| Genus | Ilybiomorphus
Porta, 1923 ⇒ Rhantus
| 0 | Species |
| Genus | Isonotus
Guignot, 1936
| 1 | Species |
| Genus | Kogurea ♰
M Kobayashi, 1962
| 1 | Species |
| Genus | Kuschelhydrus
| 0 | Species |
| Genus | Lacconectes
Zimmermann, 1928
| 0 | Species |
| Genus | Lacophilus
Sturm, 1826 ⇒ Laccophilus
| 0 | Species |
| Genus | Leucorea
Laporte, 1835
| 0 | Species |
| Genus | Lioclypeus
Guignot, 1950
| 0 | Species |
| Genus | Liodytes
Guignot, 1950
| 0 | Species |
| Genus | Lymnaeus
Gistel, 1834
| 0 | Species |
| Genus | Macrodytes
Thomson, 1860 ⇒ Dytiscus
| 3 | Species |
| Genus | Megadytoides
Brinck, 1945
| 0 | Species |
| Genus | Meganectes
Brinck, 1945
| 0 | Species |
| Genus | Melanectes
Brinck, 1945
| 0 | Species |
| Genus | Mesogabus
Guéorguiev, 1969
| 0 | Species |
| Genus | Mesovatellus
Trémouilles, 1995
| 1 | Species |
| Genus | Metaplatynectes
Guéorguiev, 1978
| 0 | Species |
| Genus | Metronectes
Sharp, 1882 ⇒ Agabus (Gaurodytes)
| 1 | Species |
| Genus | Nealocomerus
Brinck, 1945
| 0 | Species |
| Genus | Nebriogabus
Guignot, 1936
| 0 | Species |
| Genus | Necticus
Laporte de Castelnau, 1835 ⇒ Agabus (Gaurodytes)
| 2 | Species |
| Genus | Nectoserrula
Guignot, 1950
| 0 | Species |
| Genus | Neocybister
Miller, Bergsten & Whiting, 2007
| 0 | Species |
| Genus | Neonecticus
Guignot, 1951
| 0 | Species |
| Genus | Neoplatynectes ♰
Vazirani, 1970
| 0 | Species |
| Genus | Nipponhydrus
Guignot, 1954 ⇒ Allopachria
| 2 | Species |
| Genus | Nogrus
Dejean, 1833
| 1 | Species |
| Genus | Notoplatynectes ♰
Guéorguiev, 1978
| 0 | Species |
| Genus | Pachiridis
Young, 1980
| 0 | Species |
| Genus | Pachriodesma
Guignot, 1950
| 0 | Species |
| Genus | Pachriostrix
Guignot, 1950
| 0 | Species |
| Genus | Pachytes
Montrouzier, 1860
| 1 | Species |
| Genus | Paraclypeus
Vazirani, 1971
| 0 | Species |
| Genus | Paralacconectus
Vazirani, 1970
| 0 | Species |
| Genus | Paramegadytes
Tremoulles & Bachmann, 1980
| 0 | Species |
| Genus | Paraplatynectes
Vazirani, 1970
| 0 | Species |
| Genus | Parasternus
Guignot, 1936
| 0 | Species |
| Genus | Pelidus
Gistl, 1834
| 0 | Species |
| Genus | Pelocatus
Zaitzev, 1908
| 0 | Species |
| Genus | Phraeatodessus
| 0 | Species |
| Genus | Plateocolymbus
Gistl, 1857
| 0 | Species |
| Genus | Platephemera ♰
Scudder in Dawson, 1867
| 1 | Species |
| Genus | Platydessus
Guignot, 1955
| 1 | Species |
| Genus | Platynectus
| 1 | Species |
| Genus | Pleurodytes
Régimbart, 1899
| 0 | Species |
| Genus | Portmannia
Young, 1980
| 0 | Species |
| Genus | Prosciastes
Gistel, 1856
| 0 | Species |
| Genus | Pseudoscutopterus
Hatch, 1953
| 0 | Species |
| Genus | Ranagabus
Balfour-Browne, 1939
| 0 | Species |
| Genus | Rantogiton
des Gozis, 1910
| 0 | Species |
| Genus | Rantus
Dejean, 1833 ⇒ Rhantus
| 8 | Species |
| Genus | Rhabdonectes
Houlbert, 1934
| 0 | Species |
| Genus | Rhiacodytes
Adám, 1996
| 0 | Species |
| Genus | Rhythrodytes
Bameul, 1989
| 2 | Species |
| Genus | Scaphinectes
Adám, 1993
| 0 | Species |
| Genus | Schizoporus
Adám, 1996
| 0 | Species |
| Genus | Scutopterus
Lacordaire, 1835 ⇒ Meladema
| 3 | Species |
| Genus | Scytodytes
Seidlitz, 1887
| 0 | Species |
| Genus | Scytopterus
Agassiz, 1846
| 0 | Species |
| Genus | Sinoporus ♰
Prokin & Ren, 2010
| 1 | Species |
| Genus | Sternoporus
Falkenström, 1930
| 0 | Species |
| Genus | Stictitarsus
| 1 | Species |
| Genus | Stictogabus
Guignot, 1948
| 1 | Species |
| Genus | Trifurcitus
Brinck, 1945
| 0 | Species |
| Genus | Trogulus ♰
Brodie, 1874
| 0 | Species |
| Genus | Varodetellus
Biström, 1979
| 0 | Species |
| Genus | Vathydrus
Guignot, 1954
| 0 | Species |
| Genus | Veteropsyche ♰
L Botosaneanu, RO Johnson, & PR Dillon, 1998
| 1 | Species |
| Genus | Yoloides
Guignot, 1960
| 0 | Species |
| Genus | Yolula
Guignot, 1950
| 0 | Species |
| Genus | Youngulus
Spangler, 1981
| 1 | Species |
| Genus | Zimmermannius
Guignot, 1942
| 0 | Species |
