Unlike it’s cousin the Blue Morpho (Morpho menelaus of Central and South America) who has quite different lower wings than it’s top, the White Morpho’s (Morpho polyphemus of Mexico and Central America) wings look the same open and closed. Both are rather large butterflies with the blue being hardier and longer lived than it’s pale cousin.
Their wings are amazingly delicate. Upon closer inspection of this tightly cropped image, you can see the ribs and the scales of the wings along with the “fuzz” (quite scientific aren’t I?) on the thorax. They are speedy fliers but they fly like they have had too much nectar as they go fluttering around in all directions.