Ulopeza junctilinealis is a species of moth in the family Crambidae.

The forewings are yellow with a subbasal rufous line curving round at the costa and joining the antemedial line which is excurved to the submedian fold, then incurved.

The terminal area is rufous with a yellow spot beyond the postmedial line at the costa.

The hindwings are yellow with a diffused blackish spot below the lower angle of the cell.

The inner area is broadly suffused with brown except at the base and the apical area is black-brown from the costa to vein 2, narrowing at the costa, and defined on the inner side between veins 6 and 2 by the diffused dark postmedial line which is excurved between veins 5 and 2.