Caddis or Mayfly?

Discussion in 'Fly Fishing Entomology' started by Cougar Zeke, May 10, 2014.

  1. Cougar Zeke

    Cougar Zeke Member

    I was fishing at Pass Lake yesterday and noticed these under a cedar tree along the shoreline.

    I initially thought they were mayflies. They were dancing around quite a bit and appeared to be flying upside down! Upon closer examination, what I thought were their tails were actually their antenna pointed up above their wings.

    They had 4 wings and were black. Please see the attached pictures.


    Attached Files:

  2. Taxon

    Taxon Moderator Staff Member

    Hi Andy-

    Assuming this


    is the insect to which you are referring, it's a caddisfly of family Leptoceridae (Longhorned case maker). They were most likely Mystacides alafimbriatus (Black Dancer).
  3. Cougar Zeke

    Cougar Zeke Member

    Thanks Roger! I appreciate the info!

    I'm a noob on the entomology front and welcome the info. I'll see if I can tie up something that will entice the trout since they had no interest in my Griffith Gnats.
  4. Teenage Entomologist

    Teenage Entomologist Gotta love the pteronarcys.

    I've seen those Caddis at Lake Almanor in the summer here in California.
  5. Taxon

    Taxon Moderator Staff Member

    Hmm. I'm having some second thoughts concerning the genus, because they don't seem dark enough, and seem too early to be Mystacides. They may actually be Oecetis (Longhorned Sedge).