﻿AbstractThree new genera inAcutaliniare described, two of which have two discoidal cells (R2+3and M) in the forewing, as inEuriteaStål.Ceresinoideazackigen. nov. et sp. nov., from Guatemala, differs from other acutalines in having a pair of suprahumeral spines and a stepwise convex pronotum in lateral view.Quinquespinosaseptamaculagen. nov. et sp. nov., which is widely distributed in South America, differs in having a basal cell M and three posterior pronotal spines.Tectiformaguayasensisgen. nov. et sp. nov., from Ecuador, has the pronotum strongly tectiform throughout. A key to all genera ofAcutaliniis provided.