Syngamilyta samarialis is a moth in the Crambidae family. It was described by Druce in 1899. It is found in Costa Rica and Colombia. The forewings are semihyaline-white, with a dark reddish-brown base and crossed by two fine metallic blue lines, as well as a broad reddish-brown band, darker near the anal angle, crossing the wing beyond the cell from the costal to the inner margin, the outer margin slightly clouded with brown. The hindwings are semihyaline-white, crossed about the middle from the costal to the inner margin by a fine brown line, the apex, anal angle and inner margin are clouded with reddish-brown. The marginal line is white.