EuthyplociidaeEuthyplociidae is a family of mayflies in the order Ephemeroptera. There are approximately 7 genera and more than 20 described species in Euthyplociidae.GeneraThese seven genera belong to the family Euthyplociidae:Afroplocia Lestage, 1939Campylocia Needham & Murphy, 1924Euthyplocia Eaton, 1871Exeuthyplocia Lestage, 1919MesoplociaPolyplocia Lestage, 1921Proboscidoplocia Demoulin, 1966