(Greta oto)
The Glasswinged Butterfly is a beautiful insect from Mexico with completely see-through wings. They exhibit a number of interesting behaviors, such as long migrations and lekking among males.
Its Spanish name is mariposa de cristal, which means "crystal butterfly".
The tissue between the veins of its wings looks like glass, as it lacks the colored scales found in other butterflies.
Adult glasswings can be found mostly from Central to South America as far south as Chile. They can migrate great distances and have been documented as far north as Mexico and Texas.
The green caterpillars feed on these toxic plants and are perhaps toxic to predators through secondary chemicals stored in their tissues.