Moths have two sets of wings its just you cant see them if they were stood right in front of you because they are two small! Some moths you can see with though because they are much bigger! If you go on Google images you will see the sets of wings
2 wings a lady bug has
An airplane with 2 sets of wings is known as a biplane.
The boxelder bug is a black bug whose wings are orange-striped in the shape of the letter "y." The insect in question (Boisea trivittata) sports two sets of wings, with the upper set being edged in orange.
A termite has 4 wings. But when resting and wings are folded it may appear to be two wings.
monoplane
A Biplane.
Biplane
Bi-plane
The bug that is 2 inches long and has six legs, wings, and a triangle on its back sounds like a stinkbug. When it is disturbed, this bug will let out a very fowl odor.
two sets of wings
A DragonFly
A bi-wing.