Syllepte dinawa is a moth in the family Crambidae. It was described by George Hamilton Kenrick in 1912 and is found in Papua New Guinea.[1]
The wingspan is approximately 42 mm. The forewings are pale ochreous, clouded with dark grey. There is an irregular dark antemedian line and a vague postmedian line with a branch towards the angle. The apex is broadly irrorated (sprinkled) with dark and below the costa at the end of the cell is a lunate mark. There is another smaller mark nearer the base. The hindwings are pale semihyaline (almost glass-like), with traces of dark ante- and postmedian lines, while the hind margin has a broad dark shade.[2]