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Re: bauplan convergence

> I find this argument very difficult to swallow, but then I don't know much
> about insects. Are there any extant aquatic insects that have such
> propulsive
> organs?
    Stoneflies often use their wings this way (although they are also
perfectly capable of getting into the air with them), and fly fishermen can
sometimes convince trout to bite by simulating this upstream "buzz".

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