This butterfly relies on transparency to protect itself

It’s been nicknamed the "little mirror" from the forests of South America. But for this butterfly, this extraordinary appearance is a simple matter of survival. Meet the Greta oto.

This is the espejitos

This is the “little mirror” from the forests of South America. For this butterfly, its extraordinary appearance is a simple matter of survival. While most butterflies have patterns on their wings to provide camouflage from predators, the Greta oto relies on transparency.

Also known as the “glasswing butterfly,” it is found throughout an area covering Central and South America. Its wings are between 5.6 and 6.1 cm in size and, with the exception of black veins and reddish brown borders, they appear invisible. This transparency is due to how the wing’s microstructures are arranged, which allows for low absorption and reflection of light, regardless of the angle at which light hits the wings. The light simply goes through them.

But to avoid being preyed upon, the Greta oto has another feature. After consuming nectar from plants that contain toxic alkaloids, it stores those toxins in its body, making itself toxic to predators such as birds. Despite its enchanting appearance, this butterfly is flying poison to its predators.


01/21/2020 8:04 AM


  • Riki A.
    2 days

    Beautiful and exquisite butterfly, but looks can be deceiving!

  • Ian A.
    4 days

    They had these at the butterfly garden I worked at. When this video says Glasswings appear invisible, believe it.

  • Swapnil S.
    10/11/2021 15:34

    विविधरंगी फुलपाखरासह पशु पक्ष्यांनी बहरले केडीएमसीचे आंबिवली येथील निसर्ग उद्यान

  • Dönskie A.
    10/02/2021 11:40

    How I wish that those who destroyed the Amazon be fucked up by this butterfly.

  • Nina K.
    09/20/2021 06:49


  • Louis S.
    09/02/2021 17:37

    Life is full of surprises and so full of wonders!

  • Iah G.
    08/29/2021 06:56


  • Camilo C.
    08/27/2021 19:47

    The future is here

  • Shagufta M.
    08/27/2021 15:37

    Subhan Allah

  • Mudit K.
    08/19/2021 05:20


  • Gazalla P.
    08/17/2021 15:42


  • Arif I.
    08/12/2021 06:15

    Wow what beutiful butterfly, what a beautiful creation of Almighty Allah...

  • Waseem A.
    08/12/2021 03:56

    One of the best creation by Creator Allah

  • Shanthi S.
    08/11/2021 15:26


  • Valerie G.
    08/10/2021 20:52

    WOW! I’ve never seen nor heard of these butterflies; quite interesting.

  • علاء ع.
    08/10/2021 17:17

    Subhan ALLAH..the greatest

  • Kira G.
    08/09/2021 11:28


  • Suzanne A.
    08/08/2021 14:33

    Extraordinary Specie of a beautiful butterfly!

  • Rajamani V.
    08/08/2021 10:26

    Natural protection.

  • Arun G.
    08/08/2021 05:07

    Like this butter fly found in Karnataka also.

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