''Dichogama prognealis'' is a moth in the family Crambidae. It was described by Druce in 1895. It is found in

Costa Rica Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the no ...

and Ecuador. The forewings are pearly-white with a large yellow patch at the anal angle. There is a series of four glossy bluish-black bands extending across the wing from the costal margin as far as the yellow colour, and there is a small round black spot at the anal angle. The inner margin is edged with black near the base. The hindwings are pale yellowish-white.

References

Moths described in 1895 Dichogamini {{Glaphyriinae-stub