The cecropia moth (Hyalophora cecropia ... This saturniid’s upper wing tips look curiously like the side view of a cobra head—which some entomologists think could be an evolutionary defense ...

The saturniid or giant silk moths are well named. Their large size—up to 6.5 inches for the cecropia moth—and the soft silky browns, greens, and oranges of their wings are unforgettable when they ...