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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.

Mount Deborah and Hess Mountains. Two of the greatest peaks of the Alaska Range rise behind the braided, glacial Susitna River. These massive mountains are 35 miles north of where I took this picture. From the Susitna River in Alaska

Stream photos

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Male Baetidae (Blue-Winged Olive) Mayfly DunMale Baetidae (Blue-Winged Olive) Mayfly Dun
Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington
This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.
7 Recently Added Photos
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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Post pictures and ask questions of experts to help learn about aquatic insect identification.
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Topic
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Last Reply
Here's a stonefly for you to identify
Jun 16, 2013 by Levwood
9
Jun 20, 2013
by Brookyman
Please identify this bug What is the genus and species and common name of this mayfly?
Jun 10, 2013 by Levwood
13
Jun 13, 2013
by Brookyman
A little somethin somethin
Jun 7, 2013 by DayTripper
4
Jun 10, 2013
by Oldredbarn
Ephemerellidae
Jun 6, 2013 by Crepuscular
10
Jun 10, 2013
by Oldredbarn
Siphloplecton?
May 28, 2013 by DayTripper
4
Jun 3, 2013
by Brookyman
Crane Fly Top
May 30, 2013 by DayTripper
6
Jun 1, 2013
by Crepuscular
Paralep adoptiva vs. E. pluralis
May 13, 2013 by Adirman
13
May 16, 2013
by Adirman
Olives Additional baetis pic
May 10, 2013 by DayTripper
12
May 11, 2013
by Crepuscular
Caddis
May 10, 2013 by DayTripper
11
May 11, 2013
by DayTripper
Pteronarcys [Page: 1, 2]
Apr 17, 2013 by Crepuscular
20
Apr 23, 2013
by Entoman
?Perlodidae?
Sep 12, 2006 by Sundula
10
Apr 13, 2013
by Oldredbarn
West Fork San Gabriel a few years ago
Apr 7, 2013 by Tigermidge
2
Apr 8, 2013
by Tigermidge
A Couple of Stone Adults Early Black Stone from underneath Early Black Stone from above Early Brown stone from above Early Brown Stone from Under Early Brown Stone from Side
Mar 30, 2013 by DayTripper
6
Mar 31, 2013
by Entoman
Ex-Pseudocloeons
Mar 26, 2013 by Entoman
2
Mar 26, 2013
by Entoman
Lower Owens Caddis fly question?
Mar 17, 2013 by Tigermidge
9
Mar 18, 2013
by Entoman
Three Ephemerellids
Mar 13, 2013 by Crepuscular
15
Mar 14, 2013
by Entoman
South African Mayfly : Oligoneuriidae family Another close up of male subimago
Mar 11, 2013 by Ntchebe
12
Mar 14, 2013
by Entoman
Stenacron
Mar 12, 2013 by Crepuscular
1
Mar 12, 2013
by Brookyman
Epeorus
Feb 23, 2013 by Crepuscular
6
Feb 25, 2013
by Crepuscular
Ameletus
Feb 22, 2013 by Crepuscular
7
Feb 23, 2013
by Entoman
More Calamoceratidae photos [Page: 1, 2]
Feb 7, 2013 by Crepuscular
21
Feb 19, 2013
by Gutcutter
Novice Entomologist here
Feb 3, 2013 by 754cromero
10
Feb 8, 2013
by Taxon
Another Caddisfly
Feb 5, 2013 by Crepuscular
18
Feb 7, 2013
by Crepuscular
Calamoceratidae; Heteroplectron
Feb 6, 2013 by Crepuscular
7
Feb 6, 2013
by Entoman
More from Big Spring Creek [Page: 1, 2] Featured Topic
Jan 17, 2013 by Crepuscular
34
Feb 5, 2013
by JOHNW
Bug ID From carlisle pa [Page: 1, 2]
Feb 22, 2012 by Mahones41
38
Jan 8, 2013
by Crepuscular
Mayfly Classification Conundrum - Subspecies or Variation? Featured Topic
Nov 26, 2012 by Entoman
15
Dec 15, 2012
by Brookyman
Need help identifying and insect by discription only
Nov 4, 2012 by Aszat
2
Nov 4, 2012
by Aszat
Mayfly Nymph Help?
Nov 2, 2012 by Swimming
3
Nov 2, 2012
by Entoman
Possible bedbug? Need help identifying Front angle with flash Same bug, side angle, no flash
Apr 17, 2012 by Kegerreism
4
Nov 1, 2012
by Entoman
A Mayfly ID requested
Oct 24, 2012 by Rainbow
10
Oct 26, 2012
by Entoman
northern california caddisfly
Nov 27, 2006 by Troutnabout
11
Oct 18, 2012
by Entoman
What might this be. Left side Top Bottom Sorry for the photo quality I used my phoneand wacked it with the swater
Aug 30, 2012 by Snowsquatch
5
Sep 4, 2012
by Entoman
Ginormous hummingbird-like flies
Aug 13, 2012 by WestCO
11
Aug 20, 2012
by Entoman
Lepidostoma?
Aug 15, 2012 by PaulRoberts
8
Aug 19, 2012
by Entoman
Strange hatch on the Madison
Jun 21, 2012 by Shanti
12
Aug 17, 2012
by Sayfu
A few caddis and a baetid [Page: 1, 2, 3, 4, 5] Featured Topic The smaller, more in-focus pupa was still alive, kicking and swimming, hours later while taking photos. The larger, blurry one died pretty quickly - I think I injured it. Size 16 and 12, respectively, nearly identical in color. Side view of the smaller one. It didn't like to be flipped over - prefers right-side-up. Underside of a different pupa. Size 20. Top side, same pupa. A few more of these little rusty baetids I've been finding. Don't know if the fish have been feeding on them - have only found them here and there. I tied up a few good-looking dries for them, but I haven't fished them yet. Size 24.
Jul 16, 2012 by Shawnny3
87
Aug 10, 2012
by PaulRoberts
Aquatic millipede
Jun 20, 2012 by Shawnny3
18
Aug 7, 2012
by Jmd123
Stoneflies
Aug 3, 2012 by Sayfu
4
Aug 5, 2012
by Entoman
Crane Prarie Reservoir bugs.
Aug 28, 2011 by Sayfu
19
Jul 22, 2012
by Slayer
New TopicNew Topic
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