Margarosticha gaudialis is a moth in the family Crambidae. It was described by George Hampson in 1917. It is found in Papua New Guinea.[1]
The wingspan is about 18 mm. The forewings are fulvous orange, tinged with brown at the base. There is an oblique silvery band, edged with brown and a triangular silvery-white mark beyond the cell defined by rather diffused brown, as well as a silvery-white subterminal band. The hindwings are fulvous orange, with a pale base and a slightly sinuous silvery-white medial band.[2]