Pterygota


 * A: Wings transparent with lots of tiny "cells", body long and slender with forked tail, wings held upright like a butterfly (Order )
 * B: Wings transparent with lots of tiny "cells", body long and slender without forked tail, wings held either outward perpendicular to body (Fig. 1) or along body (Fig. 2) (Order )
 * C: Wings with longer "cells" (Fig. 3), or wings are not transparent. (Infraclass )