1. A butterfly species (genus Papilio or related genera) characterized by dull, non-iridescent wing coloration that lacks transparency or translucency
The opaque butterfly blended seamlessly with the tree bark.
A borboleta opaca se mimetizava perfeitamente com a casca da árvore.
2. Any butterfly with wings that do not allow light to pass through; having a matte appearance rather than glossy or transparent
Scientists studied the opaque butterfly's camouflage mechanisms.
Os cientistas estudaram os mecanismos de camuflagem da borboleta opaca.