Megaphragma mymaripenne

Species of wasp

Megaphragma mymaripenne is a very small wasp. At 200 μm in length, it is the third-smallest extant insect, comparable in size to some single-celled organisms. It has a highly reduced nervous system, containing only 7,400 neurons, several orders of magnitude fewer than in larger insects. This is the smallest number of neurons in all insects and flying animals. Its average lifespan in adulthood is 5 days.

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