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AdirmanJune 14th, 2016, 9:00 am
Monticello, NY

Posts: 490		Hey Guys, I was fishing last evening on the Willow and noticed the usual stuff that been around lately, a mix of caddis, Slate Drake, Sulfurs, etc. but then i started seeing a few quite large Mayflys float past me. I picked one up to get a good look, it was around a size 10, VERY white, wings looked pretty white too, sorry I dont have a pic, maybe I can get one in a day or 2, any thoughts based on time of year and limited description I provided? Im thinking its a Light Cahill of the Species Macaffertium Ithaca

Thanks,

Adirman
MillcreekJune 14th, 2016, 10:24 am
Healdsburg, CA

Posts: 338		Adirman,

Could be Maccaffertium ithaca, also could be Maccaffertium terminatum or Epheron leukon. Also probably others I missed.

Here are some links:

Maccaffertium terminatum - http://www.troutnut.com/hatch/600/Mayfly-Maccaffertium-terminatum

Epheron leukon - http://bugguide.net/node/view/316968/bgimage
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
AdirmanJune 16th, 2016, 11:37 pm
Monticello, NY

Posts: 490		Not Ephoron leukon, too different, either Terminatum or Ithaca I think, was definitely a good sized Mayfly, i thought a 10 when I observed it
PagansMindJune 23rd, 2016, 1:22 am
Pennsylvania

Posts: 2		Light cahills were hatching last week in PA, so it is likely that you are correct. A big one might be a 12.

http://www.djlflyfishers.org/hatches.htm

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