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Unknown fly

Joined:
2012/4/24 14:25
From Alexandria
Posts: 39
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Ok sorry no pictures cause I am not allowed cameras or cellphones in work. I was outside and seen A mayfly today that completely befuddled me. It was a male definitely with big white eyes, a yellowish thorax, a clear-like abdomen with a brown tipped end, 2 tails with little pincer like things at the end and mottled wings. Unsure what it is but any help would be useful. Plus seen a couple large brown mayflies flying around as well couldn't catch one but also didn't want to look like an idiot on camera as well. Sorry I couldn't be more descriptive.

Posted on: 2012/5/23 22:39


Re: Unknown fly

Joined:
2008/1/31 17:19
From Pretty much everywhere at some point, Thorndale today.
Posts: 13406
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The big eyes and the pincers mean male.

Without a picture there's no way to really know for sure. But based on your description I'll go with maccafertium modestum or terminatum.

Modestum:

http://www.troutnut.com/specimen/295

Terminatum:

http://www.troutnut.com/specimen/777

Posted on: 2012/5/24 8:19


Re: Unknown fly

Joined:
2012/4/24 14:25
From Alexandria
Posts: 39
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Yes the Modestum is exactly right. They were flying around the Juniata river over at work the other night.

Posted on: 2012/5/25 21:03


Re: Unknown fly

Joined:
2006/9/13 10:18
From LV
Posts: 7592
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This question brings up an important idea when identifying may flies. He calls this mayfly; Male Maccaffertium modestum (Cream Cahill).
When you type in the search box cream cahill you get this; Maccaffertium mediopunctatum (Cream Cahill). The first is a very different fly from the second. Size is perhaps the biggest difference, the first fly isn't even a 1/4 inch long, 5 mm while the second fly is over a 1/2 inch long, 13.5 mm. Without a picture I wouldn't bet on either but it could also be P. mollis wich is probably the most proliftic hatch of small flies this time of the year 3/8 inch or 8 mm. Size is everything.

Posted on: 2012/5/27 11:12
_________________
It's time to stop stocking all wild trout streams no matter what Classification they are, and time to eradicate brown trout in some of our limestone streams and re-establish brookies in them.


Re: Unknown fly

Joined:
2008/1/31 17:19
From Pretty much everywhere at some point, Thorndale today.
Posts: 13406
Offline
Quote:
2 tails with little pincer like things at the end and mottled wings.


Quote:
it could also be P. mollis


That was my first thought too, as they often have the clear abdomen. But P. Mollis has plain wings and 3 tails.

Posted on: 2012/5/29 8:00


Re: Unknown fly

Joined:
2006/9/13 10:18
From LV
Posts: 7592
Offline
I can't argue that you are wrong, I'm simply pointing out there are many flies that look similar and have clear bodies.

Posted on: 2012/5/30 20:49
_________________
It's time to stop stocking all wild trout streams no matter what Classification they are, and time to eradicate brown trout in some of our limestone streams and re-establish brookies in them.


Re: Unknown fly

Joined:
2008/1/31 17:19
From Pretty much everywhere at some point, Thorndale today.
Posts: 13406
Offline
True. Usually, if not always, the spinner stage.

Posted on: 2012/5/31 8:02






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