The wingspan is about 82 mm.
It is similar to Isognathus leachii, but the forewing upperside has more white scaling, there are interrupted white vein-streaks on the distal half of the wing, the basal patch is thinner and the marginal spots at the ends of veins are larger and paler grey.
The wingspan is about 82 mm. It is similar to Isognathus leachii, but the forewing upperside has more white scaling, there are interrupted white vein-streaks on the distal half of the wing, the basal patch is thinner and the marginal spots at the ends of veins are larger and paler grey.
Isognathus swainsonii