Key to species of Mimocagosima Breuning

1 Elytra gradually narrower after humera but become wider before apex; antennae much shorter than body length, antennae of male reaching apical fourth of elytra, antennae of female slightly beyond the center of elytra ............................................................................................... Mimocagosima ochreipennis Breuning

1’ Elytra gradually narrower apically, not become wider before the apex; antenna slightly shorter than body length, antennae of male reaching apical tenth of elytra, antennae of female reaching apical fourth of elytra ............................................................................... Mimocagosima humeralis (Gressitt) comb. nov.