Unidentified Mayfly Swarm on a St. Joe Trib

Discussion in 'Fly Fishing Entomology' started by cabezon, Aug 1, 2012.

  1. cabezon

    cabezon Sculpin Enterprises

    Hi folks,
    On a trip last week to the St. Joe, a friend of mine photographed these swarms of mayflies on the rocks of a small feeder creek entering the main river. He and I are curious as to their identity. Any direction is appreciated.
    P7270245.jpg P7270246.jpg
  2. Taxon

    Taxon Moderator Staff Member

    Hi Steve-

    Interesting photos. If you closely examine one of the individuals (as shown below), I'm sure you will conclude (as I have), that rather than being mayflies, they are actually crane flies. It looks to me like this one has its abdomen suspended beneath the water in order to deposit its ova on the underlying rock.

  3. Patrick Gould

    Patrick Gould Active Member

    Great pics, I encountered a bunch of cranes near Stevens Pass last weekend. The fish in the Yak start keying in on these starting soon.
  4. cabezon

    cabezon Sculpin Enterprises

    Hi Roger,
    I agree with your insight Roger. I did see a number of crane flies on the main stem St. Joe in the areas where I was fishing, but their body color seemed to be rusty brown. Of course, I was seeing them at dusk while this picture was taken with a flash.

  5. creekx

    creekx spent spinner

    The question remains: Were the cutties on 'em?
  6. Preston

    Preston Active Member

    Various species of craneflies exhibit a wide variation in color. Many shades of tan and brow, rusty red and a dark gray are quite common. Here are a couple of pictures, including my overly-fussy imitation.

    Attached Files:

  7. Gary Knowels

    Gary Knowels Active Member

    Preston, That is a gorgeous fly! If I couldn't see the hook bend/point I wouldn't know any better and I'm assuming the trout don't either!

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