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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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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7
Jan 2, 2018
by Wbranch
1
Nov 28, 2017
by Jmd123
5
Nov 22, 2017
by Creno
Better image
Nov 18, 2017 by Btbo32
3
Nov 20, 2017
by Wbranch
4
Nov 19, 2017
by Btbo32
Nymph??
Oct 27, 2017 by Btbo32
7
Nov 4, 2017
by Btbo32
3
Sep 19, 2017
by Creno
Valuable resource
Aug 7, 2017 by CaseyP
3
Aug 22, 2017
by CaseyP
3
Jul 13, 2017
by Millcreek
Eagle River, Ak
Jun 9, 2017 by JohnR
2
Jun 17, 2017
by JohnR
19
May 31, 2017
by David82nd
15
Mar 30, 2017
by Crepuscular
2
Jan 2, 2017
by Taxon
6
Dec 20, 2016
by Troutnut
4
Dec 6, 2016
by PaulRoberts
5
Dec 5, 2016
by Crepuscular
5
Nov 29, 2016
by Drywaters
4
Sep 29, 2016
by Wiflyfisher
What is this bug?
Sep 11, 2016 by Diver
5
Sep 12, 2016
by Diver
13
Aug 11, 2016
by PaulRoberts
6
Jul 23, 2016
by 149113
2
Jul 19, 2016
by Millcreek
7
Jul 11, 2016
by Gilsau
Light Cahills?
Jun 14, 2016 by Adirman
3
Jun 22, 2016
by PagansMind
Caddis who?
May 5, 2016 by Wiflyfisher
14
May 27, 2016
by Adirman
2
May 24, 2016
by Wiflyfisher
2
May 12, 2016
by Partsman
2
May 2, 2016
by TimCat
25
Jan 8, 2016
by Wbranch
Pycnopsyche
Nov 24, 2015 by Crepuscular
5
Nov 27, 2015
by Crepuscular
3
Nov 24, 2015
by Millcreek
2
Oct 24, 2015
by Millcreek
No-See-Ums
Sep 7, 2015 by Wbranch
12
Sep 24, 2015
by Taxon
6
Sep 8, 2015
by PaulRoberts
Baetid mayfly [Page: 1, 2]
Aug 24, 2015 by Millcreek
20
Sep 5, 2015
by Entoman
1
Aug 30, 2015
by Millcreek
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