Butterflies melt into goo then rebuild

You won't believe how caterpillars turn into soup before becoming butterflies

By Smartasaurus· 1 min read Wild

Imagine a caterpillar building a cocoon

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The short version

You won't believe how caterpillars turn into soup before becoming butterflies
As the caterpillar's old body turns to mush, these discs use the liquid protein soup as fuel to rapidly build the butterfly's new anatomy.
This suggests that while the brain is being reduced to liquid and rebuilt, some form of neural connection or memory structure remains intact throug…

A caterpillar does not grow wings inside its cocoon; it dissolves into a biological soup first. Enzymes released during metamorphosis digest almost every tissue in its body until it is a bag of nutrient-rich protein liquid.

Only a few specific clusters of cells, called imaginal discs, survive this total meltdown. These discs are essentially blueprints for the future butterfly, containing the instructions for legs, eyes, and wings.

As the caterpillar's old body turns to mush, these discs use the liquid protein soup as fuel to rapidly build the butterfly's new anatomy. It is one of the most radical structural changes possible in the animal kingdom.

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