Undulambia symphorasalis is a moth in the family Crambidae. It was described by William Schaus in 1924. It is found in Guatemala.[1]
The wingspan is about 18 mm. The forewings are tawny olive with white markings. The hindwings are suffused with mikado brown up to the postmedial line. There is a little white at the base. The antemedial white fascia are edged with fuscous and there is a black point at the end of the cell.[2]