Butterfly or dragonfly?

The Owly Sulfur (Libelloides coccajus) is an insect of the Ascalaphidae family which looks at the same time like a butterfly and a dragonfly. The hindwings are triangular in shape with a pointed end and a black spot. The forewings are slightly larger than the hindwings. There are also large sulfur yellow spots found on the wings, which is behind the species name. The rest of the wings are transparent and decorated with black veins.