: Insecta.
  • Creative Commons Attribution | Hallvard Elven

The insects encompass more than one million species, and are thus without comparison the largest group of organisms on our planet. The success of the insects is without doubt due to their wings, a trait which have evolved only four times in the history of life on Earth, and only once among the invertebrates.

Insects
Creative Commons Attribution | Hallvard Elven | Leif Aarvik | Natural History Museum, University of Oslo