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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Jummbeau has attached these 2 pictures to aid in identification. The message is below.
Jummbeau
Maine

Posts: 3
Jummbeau on Apr 21, 2008April 21st, 2008, 11:02 am EDT
Can anyone help with these two Mayflies? Both pictures were taken on June 17th, 2007 on Jam Black Brook in Appelton, Maine. The brown one is about a size 14 and the green one is about a 12/10. The brown one has 2 tais and I can't remember how many the other one had. Any assistence would be helpful.

Thank you in advance,

Jeff Space
Jummbeau
Maine

Posts: 3
Jummbeau on Apr 21, 2008April 21st, 2008, 11:09 am EDT
Sorry for the spelling mistakes. I guess I am not a very good proof reader.
Troutnut
Troutnut's profile picture
Administrator
Bellevue, WA

Posts: 2758
Troutnut on Apr 21, 2008April 21st, 2008, 12:25 pm EDT
In need of some names? Ok... the top one is Lenny. The bottom one is Bob.

As for species, I think the bottom one is some species in the Siphlonurus genus (gray drakes), though I couldn't tell you which one.

The top one might be in that genus, too, but I don't remember there being a species with that coloration in the spinner's hind wing.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Apr 21, 2008April 21st, 2008, 5:52 pm EDT
Jason and Jummbeau, based on the brown hind wing, I'd guess that "Lenny" is Siphlonurus mirus.
Taxon
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Apr 21, 2008April 21st, 2008, 6:15 pm EDT
Hey Gonzo, you da man.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Apr 21, 2008April 21st, 2008, 6:28 pm EDT
Thanks, Roger. ;)
Jummbeau
Maine

Posts: 3
Jummbeau on Apr 23, 2008April 23rd, 2008, 9:39 am EDT
Thank you very much for your replies. Thank you also for giving me a good laugh. I made a pattern for the first mayfly, now it has a name "The Lenny".

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