Mayfly ID

Discussion in 'Fly Fishing Entomology' started by creekx, May 18, 2017.

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  1. creekx

    creekx spent spinner

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    What is this mayfly they are calling a Gray Drake? To me they look like a different color phase of a March Brown (rhithrogena). I don't believe they are Gray Drakes (siphlonurus) which are typically July hatches.

    Any thoughts? (scroll down to the Gray Drake heading)

    https://www.silverbowflyshop.com/blog/spring-bugs/
     
  2. Taxon

    Taxon Moderator Staff Member

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    Yes, I agree, probably Rhithrogena morrisoni.

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