Glasswing Butterfly (Greta oto)

Glasswing Butterfly

Invertebrate

A beautiful butterfly found in Central and South America with wings that look like clear glass.

Transparent Camouflage: Its transparent wings are the opposite of opaque. Because they let light pass straight through without blocking it to make a shadow, the wings act as perfect camouflage, letting the butterfly adapt and blend into whatever is behind it so predators can't see it.

💡 Fun Facts

Diet: Adult Glasswing butterflies love to drink the nectar of toxic flowers. This makes their own bodies taste bad to predators!
Spanish Name: In the countries where they live, they are called "mariposas espejitos," which beautifully translates to "little mirror butterflies."
Strength: Despite their delicate, glassy wings, they are incredibly strong and can carry nearly 40 times their own body weight.

🕸️ Food Web

HerbivoreClick to explore how the Glasswing Butterfly fits into the ecosystem!

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Name Story

Greta oto

means “the glass-winged butterfly (scientific name meaning unknown)”

likely meaningNobody knows what Greta or oto were meant to mean — the scientist who named the butterfly never explained. (You may see 'pearl' and 'ear' online, but that isn't true.) This butterfly lives in Central and South America, not in the UK.

What does its name mean?

glasswing — glass + wing — for its clear, see-through wingsEnglish
Greta — a name chosen by the scientist who first described it; its meaning was never written downa coined name
oto — also a made-up name with no recorded meaninga coined name

The English name tells you everything you need to know: this butterfly's wings are so clear you can see straight through them, like little panes of glass. Its scientific name, Greta oto, is a puzzle — the scientist simply invented the words and never said what they mean.

🎴 Field Research Data Cards

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