Polygrammodes croesus is a moth in the family Crambidae. It was described by Herbert Druce in 1895. It is found in Guatemala.[1]
The forewings and hindwings are chrome yellow, shaded with blackish-grey scales at the base and across the middle, crossed from the costal to the inner margin by two curved dark grey lines. There is a rather faint submarginal zigzag line extending from the costal margin near the apex to the inner margin of the forewings and there is a small round spot at the base of the cell. There is an elongate hyaline-white spot at the end. The hindwings have a hyaline-white spot at the end of the cell.[2]