Larainae
Larainae is a subfamily of riffle beetles in the family Elmidae. There are more than 20 genera and 160 described species in Larainae.
Genera
These 28 genera belong to the subfamily Larainae:Disersus Sharp, 1882Dryopomorphus Hamilton, 1936Hexanchorus Sharp, 1882Hispaniolara Brown, 1981Hydora Broun, 1882Hydrethus Fairmaire, 1889Hypsilara Maier & Spangler, 2011Jaechomorphus Kodada, 1993Laorina Jäch, 1997Lara LeConte, 1852Microlara Jäch, 1993Neblinagena Spangler, 1985Omotonus Delève, 1963Ovolara Brown, 1981Parapotamophilus Brown, 1981Phanoceroides Hinton, 1939Phanocerus Sharp, 1882Pharceonus Spangler & Santiago-Fragoso, 1992Potamocares Grouvelle, 1920Potamodytes Grouvelle, 1896Potamogethes Delève, 1963Potamolatres Delève, 1963Potamophilinus Grouvelle, 1896Potamophilops Grouvelle, 1896Potamophilus Germar, 1811Pseudodisersus Brown, 1981Roraima Kodada & Jäch, 1999Stetholus Carter & Zeck, 1929