| Subfamily | Acidocerinae Zaitzev, 1908
| 3 27 | Genera Species |
| Subfamily | Amphiopinae
| 0 0 | Genera Species |
| Subfamily | Berosinae
| 0 0 | Genera Species |
| Subfamily | Chaetarthriinae Bedel, 1881
| 0 0 | Genera Species |
| Subfamily | Chaetarthrinae
| 0 0 | Genera Species |
| Subfamily | Enochrinae Short & FikáÄek, 2013
| 0 0 | Genera Species |
| Subfamily | Epimetopinae Zaitzev, 1908 ⇒ Epimetopidae
| 4 84 | Genera Species |
| Subfamily | Georissinae Laporte, 1840 ⇒ Georyssidae Minute Mud-loving Beetles | 2 117 | Genera Species |
| Subfamily | Helophorinae Leach, 1815
| 6 521 | Genera Species |
| Subfamily | Horelophinae Hansen, 1991
| 0 0 | Genera Species |
| Subfamily | Horelophopsinae Hansen, 1997 ⇒ Acidocerinae
| 1 2 | Genus Species |
| Subfamily | Hydrobiinae Troschel, 1857
| 0 0 | Genera Species |
| Subfamily | Hydrochinae Thomson, 1859 ⇒ Hydrochidae
| 2 361 | Genera Species |
| Subfamily | Hydrophilinae Latreille, 1802
| 82 3621 | Genera Species |
| Subfamily | Rygmodinae Short & Fikácek, 2013
| 0 0 | Genera Species |
| Subfamily | Spercheinae Erichson, 1837 ⇒ Spercherinae
| 0 0 | Genera Species |
| Subfamily | Spercherinae Erichson, 1837
| 2 47 | Genera Species |
| Subfamily | Sphaeridiinae Latreille, 1802
| 116 1655 | Genera Species |
| Genus | Acanthoberosus Kuwert, 1890 ⇒ Berosus
| 0 | Species |
| Genus | Acrenitis ♰ Matsui & Nakane, 1985 ⇒ Crenitis
| 0 | Species |
| Genus | Acycreon d´Orchymont, 1942 ⇒ Cercyon
| 0 | Species |
| Genus | Adolphus
| 1 | Species |
| Genus | Agraphilhydrus Everts, 1898 ⇒ Enochrus
| 0 | Species |
| Genus | Agraphilydrus Kuwert, 1888 ⇒ Enochrus
| 0 | Species |
| Genus | Agraphophilydrus Zaitzev, 1908 ⇒ Enochrus
| 0 | Species |
| Genus | Alegorius ♰ Fikacek & al., 2014
| 1 | Species |
| Genus | Alesi
| 0 | Species |
| Genus | Altipaniensis
| 0 | Species |
| Genus | Amrishius Makhan, 1998
| 0 | Species |
| Genus | Anchialus Gistel, 1834 ⇒ Berosus
| 5 | Species |
| Genus | Angarolarva ♰ Ponomarenko, 1985
| 2 | Species |
| Genus | Aparacymus ♰ Matsui & Nakane, 1985
| 0 | Species |
| Genus | Aposphinctus ♰ Bode, 1953
| 4 | Species |
| Genus | Arcocercyon Hebauer, 2003 ⇒ Cercyon
| 0 | Species |
| Genus | Aschius Makhan, 2002
| 0 | Species |
| Genus | Aschnaia Makhan, 2007
| 1 | Species |
| Genus | Atrachthelophorus Zaitzev, 1908 ⇒ Helophorus
| 0 | Species |
| Genus | Atractelophorus Ganglbauer, 1904 ⇒ Helophorus
| 2 | Species |
| Genus | Atracthelophorus Kuwert, 1890
| 1 | Species |
| Genus | Atractohelophorus Kuwert, 1886
| 0 | Species |
| Genus | Aulonochares Girón & Short, 2019
| 3 | Species |
| Genus | Austrotypus Fiká?ek, Minoshima & Newton, 2014
| 2 | Species |
| Genus | Baissalarva ♰ Fikacek & al., 2014
| 1 | Species |
| Genus | Baissatermes Engel & al., 2007
| 1 | Species |
| Genus | Batochares Hansen, 1991 ⇒ Helochares
| 3 | Species |
| Genus | Bipunctata
| 0 | Species |
| Genus | Bradempleurus Sharp, 1915 ⇒ Helophorus
| 0 | Species |
| Genus | Caelostoma ⇒ Coelostomidia
| 3 | Species |
| Genus | Cambrus Villa & Villa, 1833 ⇒ Cercyon
| 2 | Species |
| Genus | Cathammistes Illiger, 1807 ⇒ Georissus
| 0 | Species |
| Genus | Cerayon
| 1 | Species |
| Genus | Cercydion Latreille, 1829 ⇒ Cercyon
| 0 | Species |
| Genus | Cerdanyagrion ♰ Nel, Arillo & Martinez-Delclos, 1996
| 1 | Species |
| Genus | Cernocyton Hansen, 1990
| 0 | Species |
| Genus | Cerycon Rey, 1886
| 3 | Species |
| Genus | Chaetarthrias Chenu, 1851
| 0 | Species |
| Genus | Chaetarthriomorphus Chiesa, 1967
| 1 | Species |
| Genus | Chaeteessites ♰ Gratshev & Zherikhin, 1994
| 1 | Species |
| Genus | Chaethartria Thomson, 1859
| 0 | Species |
| Genus | Cheilocercyon Seidlitz, 1888
| 0 | Species |
| Genus | Circumcinctum
| 0 | Species |
| Genus | Clinocercyon d´Orchymont, 1942 ⇒ Cercyon
| 0 | Species |
| Genus | Coccinellophana Handlirsch, 1906
| 1 | Species |
| Genus | Coelosoma
| 0 | Species |
| Genus | Colossochares Girón & Short, 2021
| 2 | Species |
| Genus | Conocercyon Hebauer, 2003 ⇒ Cercyon
| 0 | Species |
| Genus | Crenephilus Wickham, 1895 ⇒ Anacaena
| 0 | Species |
| Genus | Creniphilites ♰ Wickham, 1913
| 1 | Species |
| Genus | Crenitulus Winters, 1926
| 21 | Species |
| Genus | Crenophilus Orchymont, 1942 ⇒ Anacaena
| 1 | Species |
| Genus | Crephelochares Kuwert, 1890
| 29 | Species |
| Genus | Crepidelochares Ganglbauer, 1904 ⇒ Chasmogenus
| 0 | Species |
| Genus | Cretocrenis FikáÄ�ek, Minoshima, Komarek, Short, Huang & Cai, 2017
| 1 | Species |
| Genus | Cretohelophorus ♰ Ponomarenko, 1987
| 2 | Species |
| Genus | Cretospercheus ♰
| 0 | Species |
| Genus | Cretosperchus ♰ Ponomarenko, 1997
| 1 | Species |
| Genus | Cretoxenus ♰ Fikacek & al., 2014
| 1 | Species |
| Genus | Crucisternum Girón & Short, 2018
| 7 | Species |
| Genus | Cryniphilus Motschoulsky, 1845
| 0 | Species |
| Genus | Crypteuna Motschulsky, 1863
| 0 | Species |
| Genus | Cryptopieurum ⇒ Cryptopleurum
| 0 | Species |
| Genus | Cyceron Shatrovskiy, 1992
| 0 | Species |
| Genus | Cyclolaccobius Gentili, 1991 ⇒ Laccobius
| 0 | Species |
| Genus | Cycloma
| 1 | Species |
| Genus | Cyclomissus Zaitzev, 1908 ⇒ Cylomissus
| 1 | Species |
| Genus | Cyclonotum Erichson, 1837 ⇒ Dactylosternum
| 50 | Species |
| Genus | Cylloma Zaitzev, 1908 ⇒ Cyloma
| 0 | Species |
| Genus | Cylorygnus
| 1 | Species |
| Genus | Cymbiodita Kuwert, 1890
| 0 | Species |
| Genus | Cymbula Bedel, 1881
| 0 | Species |
| Genus | Cyphelophorus Seidlitz, 1888
| 1 | Species |
| Genus | Cyprimorphus Fairmaire, 1873
| 1 | Species |
| Genus | Dachylosternum
| 2 | Species |
| Genus | Dactilosternum Kuwert, 1890
| 1 | Species |
| Genus | Deepakius Makhan, 1998
| 2 | Species |
| Genus | Dimorpholaccobius Zaitzev, 1938 ⇒ Laccobius
| 0 | Species |
| Genus | Elephorus Paykull, 1798 ⇒ Helophorus
| 2 | Species |
| Genus | Enigmahydrus Seidel, Minoshima, Leschen & FikáÄ�ek, 2020
| 1 | Species |
| Genus | Enochroides Kuwert, 1890
| 1 | Species |
| Genus | Enoplurus Hope, 1838
| 1 | Species |
| Genus | Ephydrolithus Girón & Short, 2019
| 5 | Species |
| Genus | Epicercyon Kuwert, 1890
| 0 | Species |
| Genus | Ercycon Rey, 1886
| 0 | Species |
| Genus | Escheria Heer, 1847
| 6 | Species |
| Genus | Euberosus Acloque, 1896
| 0 | Species |
| Genus | Eumetacymus Brèthes, 1922
| 1 | Species |
| Genus | Eutrichelophorus Sharp, 1915 ⇒ Helophorus
| 4 | Species |
| Genus | Evanesternum Arriaga-Varela, Seidel & Fiká?ek, 2018
| 1 | Species |
| Genus | Exhydrus Orchymont, 1919
| 0 | Species |
| Genus | Farana Knisch, 1922 ⇒ Enochrus
| 1 | Species |
| Genus | Fiká
| 0 | Species |
| Genus | Fontiscrutor Pandelle, 1876 ⇒ Crenitis
| 0 | Species |
| Genus | Georissites ♰ Laporte, 1840
| 2 | Species |
| Genus | Gephelophorus Sharp, 1915
| 1 | Species |
| Genus | Gitocyloma Broun, 1915
| 1 | Species |
| Genus | Globipelthydrus Schonmann, 1994 ⇒ Pelthydrus
| 0 | Species |
| Genus | Glyptolaccobius Gentili, 1989 ⇒ Laccobius
| 0 | Species |
| Genus | Graphelochares Kuwert, 1890 ⇒ Helochares
| 0 | Species |
| Genus | Grapidelochares Ganglbauer, 1904 ⇒ Helochares
| 0 | Species |
| Genus | Gymnhelochares d´Orchymont, 1932 ⇒ Agraphydrus
| 0 | Species |
| Genus | Hammacoelostoma Mouchamps, 1958 ⇒ Coelostoma
| 0 | Species |
| Genus | Heleophorus
| 1 | Species |
| Genus | Helephorus Guillebaud, 1893 ⇒ Elophorus
| 0 | Species |
| Genus | Helobius Mulsant, 1851
| 1 | Species |
| Genus | Helocharimorphus Kuwert, 1890 ⇒ Helochares
| 1 | Species |
| Genus | Helocharis Thomson, 1859
| 0 | Species |
| Genus | Helopeltina Cockerell, 1906
| 0 | Species |
| Genus | Helophygas Motschoulsky, 1853
| 0 | Species |
| Genus | Hexameristus ♰ Bode, 1953
| 1 | Species |
| Genus | Himalcercyon Hebauer, 2002 ⇒ Cercyon
| 2 | Species |
| Genus | Himalcerycon
| 2 | Species |
| Genus | Himalocercyon Hebauer, 2002 ⇒ Cercyon
| 0 | Species |
| Genus | Holcophilhydrus d´Orchymont, 1919 ⇒ Enochrus
| 0 | Species |
| Genus | Holcophilhydus Orchymont, 1919 ⇒ Enochrus
| 0 | Species |
| Genus | Holcophilydrus Knisch, 1911 ⇒ Enochrus
| 0 | Species |
| Genus | Holocoelostoma Mouchamps, 1958 ⇒ Coelostoma
| 0 | Species |
| Genus | Homostethus d´Orchymont, 1921
| 0 | Species |
| Genus | Hugoscottia Knisch, 1922
| 0 | Species |
| Genus | Hydatotrephis MacLeay, 1871 ⇒ Enochrus
| 1 | Species |
| Genus | Hydatotrophis d´Orchymont, 1919
| 0 | Species |
| Genus | Hydraechus Stephens, 1839
| 0 | Species |
| Genus | Hydrobiites ♰ Heer, 1865
| 27 | Species |
| Genus | Hydrocantharis Motschoulsky, 1857
| 0 | Species |
| Genus | Hydrochares Solsky, 1876
| 1 | Species |
| Genus | Hydrocharis Hope, 1838 ⇒ Hydrochara
| 10 | Species |
| Genus | Hydrochous Bedel, 1881
| 10 | Species |
| Genus | Hydrochoüs Bedel, 1881
| 0 | Species |
| Genus | Hydrocombus Sharp, 1882
| 3 | Species |
| Genus | Hydrocyclus Sharp, 1884
| 4 | Species |
| Genus | Hydrodema Laporte de Castelnau, 1840
| 0 | Species |
| Genus | Hydroicetes ♰ Bode, 1953
| 1 | Species |
| Genus | Hydrolus Rafinesque, 1815
| 0 | Species |
| Genus | Hydrophilites ♰ Heer, 1864
| 5 | Species |
| Genus | Hydrophilopsis Heer, 1862
| 2 | Species |
| Genus | Hydroporopsis Handlirsch, 1906
| 1 | Species |
| Genus | Hydrosoma Laporte de Castelnau, 1840
| 0 | Species |
| Genus | Hydrotrephis Régimbart, 1908
| 0 | Species |
| Genus | Hydrous Dahl, 1775 ⇒ Hydrophilus (Hydrophilus)
| 42 | Species |
| Genus | Hydroxenus Wollaston, 1867
| 0 | Species |
| Genus | Hydroyixia ♰ Fikacek & al., 2014
| 2 | Species |
| Genus | Hygrotrophus MacLeay, 1871
| 3 | Species |
| Genus | Ictinosternum Smetana, 1978
| 0 | Species |
| Genus | Incisa
| 0 | Species |
| Genus | Kanakorum
| 0 | Species |
| Genus | Katasophistes Girón & Short, 2018
| 4 | Species |
| Genus | Kiransus Makhan, 1994
| 2 | Species |
| Genus | Kuscheli
| 0 | Species |
| Genus | Kyphohelophorus Kuwert, 1886
| 0 | Species |
| Genus | Laccobiellus Abeille, 1901
| 0 | Species |
| Genus | Lachnocoelostoma d´Orchymont, 1940
| 0 | Species |
| Genus | Lihelophorus Zaitzev, 1908
| 0 | Species |
| Genus | Limnohydrobius Reitter, 1909
| 4 | Species |
| Genus | Loebli
| 0 | Species |
| Genus | Lumetus Zaitzev, 1908
| 0 | Species |
| Genus | Macrocercyon Alluaud, 1899
| 0 | Species |
| Genus | Macrolaccobius Gentili, 1972
| 0 | Species |
| Genus | Megathentomum ♰ Scudder, 1868
| 3 | Species |
| Genus | Megempleurus Sharp, 1915
| 2 | Species |
| Genus | Meghelophorus Kuwert, 1886
| 1 | Species |
| Genus | Merosoma Balfour-Browne, 1939
| 4 | Species |
| Genus | Mesohelophorus ♰ Ponomarenko, 1977
| 3 | Species |
| Genus | Mesosperchus ♰ Ponomarenko, 1977
| 4 | Species |
| Genus | Mesydra ♰ Ponomarenko, 1977
| 1 | Species |
| Genus | Metacymus Sharp, 1882
| 1 | Species |
| Genus | Methydrus Rey, 1885
| 0 | Species |
| Genus | Microgioton
| 1 | Species |
| Genus | Microlaccobius Gentili, 1972
| 0 | Species |
| Genus | Namostygnus Broun, 1909 ⇒ Cyloma
| 3 | Species |
| Genus | Nanosaphes Girón & Short, 2018
| 4 | Species |
| Genus | Neogeorissus Sato, 1972
| 0 | Species |
| Genus | Neohydrobius Blackburn, 1898
| 1 | Species |
| Genus | Neosternolophus Zaitsev, 1909
| 0 | Species |
| Genus | Nipponogeorissus Sato, 1972
| 0 | Species |
| Genus | Nothydrus Orchymont, 1942
| 0 | Species |
| Genus | Notoberosus Blackburn, 1895
| 1 | Species |
| Genus | Novochares Girón & Short, 2021
| 53 | Species |
| Genus | Octohelophorus
| 1 | Species |
| Genus | Oedocercyon d´Orchymont, 1942
| 0 | Species |
| Genus | Omicrogeton
| 1 | Species |
| Genus | Oreosternum Jia, Fenglong, Zulong Liang & FikáÄ�ek, 2020
| 1 | Species |
| Genus | Orphelophorus d´Orchymont, 1926
| 0 | Species |
| Genus | Orphnospercheus Lin, 1992
| 2 | Species |
| Genus | Pagipherus Kuwert, 1893
| 0 | Species |
| Genus | Paraberosus Kuwert, 1890
| 2 | Species |
| Genus | Paracercyon Seidlitz, 1888
| 0 | Species |
| Genus | Paracycreon d´Orchymont, 1942
| 0 | Species |
| Genus | Paracymorphus Kuwert, 1888 ⇒ Paracymus
| 1 | Species |
| Genus | Parafletium Balfour-Browne, 1945
| 1 | Species |
| Genus | Paraliocercyon Ganglbauer, 1904
| 0 | Species |
| Genus | Paraspercheus ♰ Ponomarenko, 1977
| 2 | Species |
| Genus | Peloxenus Motschoulsky, 1845
| 0 | Species |
| Genus | Penites ♰ Zhang, Sun & Zhang, 1994
| 0 | Species |
| Genus | Perochtes Zaitsev, 1908
| 0 | Species |
| Genus | Perochthes Sharp, 1882
| 2 | Species |
| Genus | Phaenonotus
| 0 | Species |
| Genus | Phaenotypus Horn, 1890 ⇒ Omicrus
| 1 | Species |
| Genus | Phelerosus Sharp, 1884
| 0 | Species |
| Genus | Philhydrus Brullé, 1835 ⇒ Enochrus (Enochrus)
| 89 | Species |
| Genus | Philydrus Solier, 1834 ⇒ Enochrus (Lumetus)
| 57 | Species |
| Genus | Pigrillum Knisch, 1920
| 2 | Species |
| Genus | Platylaccobius Gentili, 1972
| 0 | Species |
| Genus | Pleurhomus Sharp, 1883
| 0 | Species |
| Genus | Polysitum ♰ Dunstan, 1923
| 14 | Species |
| Genus | Primocerus Girón & Short, 2019
| 11 | Species |
| Genus | Pristoternus d´Orchymont, 1936
| 0 | Species |
| Genus | Prospercheus ♰ Prokin, 2009
| 1 | Species |
| Genus | Prostercyon Smetana, 1978
| 0 | Species |
| Genus | Protochares ♰ Fikacek & al., 2014
| 1 | Species |
| Genus | Psephoboragus Broun, 1893 ⇒ Cyloma
| 3 | Species |
| Genus | Pseudenochrus Lomnicki, 1911
| 0 | Species |
| Genus | Pseudohelochares Satô, 1960
| 1 | Species |
| Genus | Pseudopelthydrus Jia, 1998 ⇒ Agraphydrus (Agraphydrus)
| 1 | Species |
| Genus | Pseudosternum
| 2 | Species |
| Genus | Psilodacnum Orchymont, 1937 ⇒ Lachnodacnum
| 0 | Species |
| Genus | Punctiventris
| 0 | Species |
| Genus | Pylophilus Motschoulsky, 1845
| 1 | Species |
| Genus | Quasiparacymus Marjanian, 2009
| 0 | Species |
| Genus | Radicidus
| 0 | Species |
| Genus | Relictorygmus Seidel, Minoshima, Arriaga-Varela & FikáÄ�ek, 2018
| 2 | Species |
| Genus | Reticulatus
| 0 | Species |
| Genus | Rhopalelophorus Kuwert, 1890
| 0 | Species |
| Genus | Rhopalhelophorus Kuwert, 1890
| 0 | Species |
| Genus | Rhopalohelophorus Kuwert, 1886
| 0 | Species |
| Genus | Rishihydroius Makhan, 2001
| 1 | Species |
| Genus | Rishwanius Makhan, 1998
| 0 | Species |
| Genus | Satishius Makhan, 2004
| 0 | Species |
| Genus | Simempleurus Sharp, 1915
| 0 | Species |
| Genus | Sindolus Sharp, 1882
| 8 | Species |
| Genus | Soesilius Makhan, 2001
| 1 | Species |
| Genus | Spaeridiolinus Minozzi, 1921
| 0 | Species |
| Genus | Spalacoides ♰ Bode, 1953
| 1 | Species |
| Genus | Sperchus Schlosser-Klekovski, 1877
| 0 | Species |
| Genus | Sphaeridiolinus Minozzi, 1921
| 0 | Species |
| Genus | Sphaerocantharis ♰ Bode, 1953
| 4 | Species |
| Genus | Spheroides Hope, 1838
| 0 | Species |
| Genus | Stagnicola Montrouzier, 1860
| 1 | Species |
| Genus | Steropoides ♰ Kirby, 1890
| 3 | Species |
| Genus | Stethoscus Mouchamps, 1959
| 0 | Species |
| Genus | Stethoxus Solier, 1834 ⇒ Hydrophilus (Hydrophilus)
| 7 | Species |
| Genus | Streblocardioides ♰ Bode, 1953
| 1 | Species |
| Genus | Strepitornus Hansen, 1989
| 0 | Species |
| Genus | Stygnohydrus Broun, 1893 ⇒ Tormus
| 4 | Species |
| Genus | Supercheus Latreille, 1802
| 0 | Species |
| Genus | Temnopterus Solier, 1834
| 1 | Species |
| Genus | Tetracanthicus Hope, 1838
| 0 | Species |
| Genus | Thaumhelophorus Angus, 1995
| 0 | Species |
| Genus | Thomosis Broun, 1904 ⇒ Tormissus
| 1 | Species |
| Genus | Transithelophorus Angus, 1970
| 0 | Species |
| Genus | Trichelophorus Trichelophorus, 1889 ⇒ Helophorus (Trichohelophorus)
| 2 | Species |
| Genus | Trichohelophorus Kuwert, 1888
| 0 | Species |
| Genus | Tropisternis Solier, 1834
| 1 | Species |
| Genus | Volvulus Brullé, 1835
| 11 | Species |
| Genus | Wollastonia Horn, 1873 ⇒ Laparocerus (Machadotrox)
| 2 | Species |
| Genus | Yateberosus ♰ Sato, 1966
| 2 | Species |
| Genus | Zetemnos ♰
| 0 | Species |