Polygrammodes modestalis is a moth in the family Crambidae. It was described by Harrison Gray Dyar Jr. in 1912. It is found in Mexico (Veracruz, Tecualpan).[1]
The wingspan is about 44 mm. The wings are light brown, the forewings with the veins and lines dark brown. The cell is a little lighter as are the interspaces between the outer and subterminal lines. The costa and fringe are dark brown and the reniform (kidney-shaped) and orbicular spots are round, brown and fused to the edges of the cell. There is also a terminal row of pale yellowish marks. The hindwings are whitish and tinged with brown.[2]