Tuesday, February 9, 2016

Convergent Evolution, or, That's Not a Butterfly

On the left, a modern butterfly. On the right, a 150-million-year-old insect fossil. Which is not a butterfly – butterflies wouldn't evolve for another 50 million years – but a relative of modern lacewing flies. These insects seems to have lived much like modern butterflies, pollinating long-ago relatives of modern pine trees and cycads. Through the process we call convergent evolution, they ended up looking much like modern butterflies, to the "eye spots" on their wings.

1 comment:

  1. But... there are already extant creatures with eyespots that aren't butterflies nor evolved from them, such as certain fish, birds, and cats.

    Is it the fact that this lacewing is a fellow insect, and therefor much more directly similar to a butterfly, that makes this somehow more remarkable than the others?

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