About Isognathus swainsoni C.Felder & R.Felder, 1862
This species, Isognathus swainsoni C.Felder & R.Felder, 1862, has a wingspan of approximately 82 millimeters. It resembles Isognathus leachii, but differs in several key features of the forewing upperside: it has more white scaling, interrupted white vein-streaks on the distal half of the wing, a thinner basal patch, and larger, paler grey marginal spots at the ends of the veins. Its distribution ranges from French Guiana, Peru, and Brazil extending to Bolivia.
