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> Mayfly I.D.

14Adams	May 30th, 2011, 9:01 pm
Western PA Posts: 4	Howdy all. I have a question about the mayfly I fished among this evening. There were quite a few of them,females I figure,with snow white abdomens. Not just sort of white, snow white. I couldn't catch any for pics as they dipped and rose from the surface. Not huge,not small,just a fairly abundant medium sized mayfly. Any thoughts?
Troutnut	May 30th, 2011, 10:18 pm
Administrator Bellevue, WA Posts: 2522	Like this maybe? http://www.troutnut.com/specimen/778 The other white-bodied mayflies I can think of are green drake spinners (roughly the right time of year, but they're big) and Ephoron mayflies (right size and color, wrong time of year).
	Jason Neuswanger, Ph.D. Troutnut and salmonid ecologist
14Adams	May 31st, 2011, 9:29 pm
Western PA Posts: 4	Not exactly. The wings and thorax are darker. I went back this evening looking for a spinner or two to gather up,but no dice. There were a few females dipping again and without a net I didn't stand a chance. Being the first of June I have to think Green Drake. The less than monsterous porportions may just be a local thing.
Troutnut	May 31st, 2011, 11:16 pm
Administrator Bellevue, WA Posts: 2522	Green drakes are the only white-abdomen spinners I can think of with anything other than totally clear wings. Here's one of my green drake spinners: http://www.troutnut.com/specimen/736 Look about right?
	Jason Neuswanger, Ph.D. Troutnut and salmonid ecologist
14Adams	June 1st, 2011, 4:28 pm
Western PA Posts: 4	Looks like the critter. I figure that's it.
Konchu	June 3rd, 2011, 12:23 am
Site Editor Indiana Posts: 496	There are some medium sized heptageniids that fit the bill, I think, unless I'm way off. Always a possibility these days.
Brookyman	September 14th, 2011, 12:27 am
Banned Posts: 797	Looking at the dates of this tread, I can't tell what time of year your are dealing with for sure. If its spring, likely Stenonema Interpunctatum Canadense. Or even stenonema hetrotarsale can be quite blonde in colour. They are also in the size 10 through 14's or so. Stenonema Intergrum also has clear wings as a spinner. All of the above is based on the area they are hatching from and can be from light cream to dead clear in the ab's.... They all fall under Light Cahill's. It is best to measure full body from the tail beginnings to the head as ephemera Guttlata is quite large 18-30mm and the Steno's are smaller ranging in the 9-14mm. Using the term KEY'S these are a great way to help you. If it has only 2 tails as an adult, it is in the grouping Stenonema, if 3 its Ephemera.. Hope this is of any help to you. Sorry about the techno stuff its the only way to break things down in the right places. Most of the above hatch's do start in June. Mack.
	Banned for threatening another user and then trying to circumvent a kinder "soft" ban with fake accounts

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