Post pictures and ask questions of experts to help learn about aquatic insect identification.
Title | Replies | Last Reply |
Drunella grandis species complex Aug 1, 2019 by Crepuscular | 2 | Aug 2, 2019 by Crepuscular |
What in the world are these things ?![](http://www.troutnut.com/im_user_ident/picture_1328_topiclist.jpg) Jul 14, 2019 by Tuckcast | 3 | Jul 15, 2019 by Tuckcast |
Mayfly identification help please ![](http://www.troutnut.com/im_user_ident/picture_1327_topiclist.jpg) Jun 9, 2019 by Btbo32 | 2 | Jun 10, 2019 by Btbo32 |
Tiny Mayfly ID help please.![](http://www.troutnut.com/im_user_ident/picture_1325_topiclist.jpg) Mar 28, 2019 by Quagmireage | 4 | Apr 3, 2019 by Konchu |
Stonefly?![](http://www.troutnut.com/im_user_ident/picture_1324_topiclist.jpg) Feb 21, 2019 by Agresens | 2 | Feb 21, 2019 by Creno |
larvae vs nymph Aug 2, 2009 by Billq | 7 | Nov 5, 2018 by Wbranch |
What Type of Bug is This![](http://www.troutnut.com/im_user_ident/picture_1323_topiclist.jpg) Aug 29, 2018 by WingNut13 | 2 | Sep 18, 2018 by Konchu |
Heptagenia?![](http://www.troutnut.com/im_user_ident/picture_1322_topiclist.jpg) Aug 23, 2018 by Orvisman | 1 | Aug 26, 2018 by Martinlf |
A few bugs from the Kinderhook Creek (NY)![](http://www.troutnut.com/im_user_ident/picture_1321_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1319_topiclist.jpg) Jun 18, 2018 by Agresens | 3 | Jun 27, 2018 by Konchu |
Possibly Gray Drake collected April Bitterroot river May 27, 2018 by Leskorcala | 0 | |
Little Black Caddis![](http://www.troutnut.com/im_user_ident/picture_1318_topiclist.jpg) Apr 22, 2018 by Adirman | 5 | Apr 24, 2018 by Adirman |
Lake Invertebrate ID help![](http://www.troutnut.com/im_user_ident/picture_1317_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1316_topiclist.jpg) Apr 22, 2018 by ADKbrookie | 5 | Apr 23, 2018 by Millcreek |
Stonefly ID help Apr 13, 2018 by Redfisher85 | 1 | Apr 13, 2018 by Redfisher85 |
Isoperla marmorata and Taenionema pacificum![](http://www.troutnut.com/im_user_ident/picture_1313_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1315_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1312_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1314_topiclist.jpg) Feb 21, 2018 by Millcreek | 0 | |
What kind of aquatic bug is this? Feb 17, 2018 by Ihunta | 2 | Feb 17, 2018 by Ihunta |
Warmwater Caddis -Any Guesses?![](http://www.troutnut.com/im_user_ident/picture_1311_topiclist.jpg) Feb 1, 2018 by PaulRoberts | 2 | Feb 2, 2018 by PaulRoberts |
North-East Canada Mayfly identification![](http://www.troutnut.com/im_user_ident/picture_1306_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1304_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1302_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1301_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1303_topiclist.jpg) (1 more) Dec 16, 2017 by JpMcKenzie | 1 | Jan 28, 2018 by Taxon |
I need help identifying these flies ![](http://www.troutnut.com/im_user_ident/picture_1308_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1309_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1310_topiclist.jpg) Jan 24, 2018 by Joeman | 3 | Jan 25, 2018 by Martinlf |
Mayfly Identification help![](http://www.troutnut.com/im_user_ident/picture_1307_topiclist.jpg) Dec 30, 2017 by Naaimzerox | 7 | Jan 2, 2018 by Wbranch |
Indiana flying insect ID - Thanksgiving 2017![](http://www.troutnut.com/im_user_ident/picture_1300_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1297_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1298_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1299_topiclist.jpg) Nov 29, 2017 by Bnorikane | 2 | Dec 17, 2017 by Bnorikane |
Aeshna naiad![](http://www.troutnut.com/im_user_ident/picture_1295_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1296_topiclist.jpg) Nov 21, 2017 by Millcreek | 1 | Nov 28, 2017 by Jmd123 |
Brechmorhoga naiad![](http://www.troutnut.com/im_user_ident/picture_1288_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1290_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1292_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1291_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1289_topiclist.jpg) Nov 11, 2017 by Millcreek | 5 | Nov 22, 2017 by Creno |
Better image![](http://www.troutnut.com/im_user_ident/picture_1294_topiclist.jpg) Nov 18, 2017 by Btbo32 | 3 | Nov 20, 2017 by Wbranch |
Need help Identifying this please ?![](http://www.troutnut.com/im_user_ident/picture_1293_topiclist.jpg) Nov 18, 2017 by Btbo32 | 4 | Nov 19, 2017 by Btbo32 |
Nymph??![](http://www.troutnut.com/im_user_ident/picture_1287_topiclist.jpg) Oct 27, 2017 by Btbo32 | 7 | Nov 4, 2017 by Btbo32 |
At Last! A Bug of my Very Own!![](http://www.troutnut.com/im_user_ident/picture_1286_topiclist.jpg) Sep 12, 2017 by CaseyP | 3 | Sep 19, 2017 by Creno |
Valuable resource Aug 7, 2017 by CaseyP | 3 | Aug 22, 2017 by CaseyP |
I think I know, but want verification![](http://www.troutnut.com/im_user_ident/picture_1285_topiclist.jpg) Jul 13, 2017 by Byhaugh | 3 | Jul 13, 2017 by Millcreek |
Eagle River, Ak![](http://www.troutnut.com/im_user_ident/picture_1284_topiclist.jpg) Jun 9, 2017 by JohnR | 2 | Jun 17, 2017 by JohnR |
Please help identify this fly![](http://www.troutnut.com/im_user_ident/picture_734_topiclist.jpg) May 6, 2013 by Tosh | 19 | May 31, 2017 by David82nd |
Argia and Enallagma nymphs![](http://www.troutnut.com/im_user_ident/picture_1280_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1281_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1282_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1279_topiclist.jpg) Feb 4, 2017 by Millcreek | 5 | Apr 25, 2017 by Oldredbarn |
Need help with identification![](http://www.troutnut.com/im_user_ident/picture_1283_topiclist.jpg) Mar 6, 2017 by Troutal | 15 | Mar 30, 2017 by Crepuscular |
Flat Creek Jackson Wyoming![](http://www.troutnut.com/im_user_ident/picture_1278_topiclist.jpg) Jan 2, 2017 by Trnnflt | 2 | Jan 2, 2017 by Taxon |
Yakima River Light Cahill![](http://www.troutnut.com/im_user_ident/picture_1272_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1273_topiclist.jpg) Nov 29, 2016 by Drywaters | 6 | Dec 20, 2016 by Troutnut |
Isoperla pinta![](http://www.troutnut.com/im_user_ident/picture_1270_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1271_topiclist.jpg) Nov 26, 2016 by Millcreek | 4 | Dec 6, 2016 by PaulRoberts |
Sialis sp.![](http://www.troutnut.com/im_user_ident/picture_1274_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1275_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1276_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1277_topiclist.jpg) Dec 1, 2016 by Millcreek | 5 | Dec 5, 2016 by Crepuscular |
Yakima River Light Cahill![](http://www.troutnut.com/im_user_ident/picture_1267_topiclist.jpg) ![](http://www.troutnut.com/im_user_ident/picture_1268_topiclist.jpg) Sep 6, 2016 by Drywaters | 5 | Nov 29, 2016 by Drywaters |
What is this Western midge? Sep 28, 2016 by Wiflyfisher | 4 | Sep 29, 2016 by Wiflyfisher |
What is this bug?![](http://www.troutnut.com/im_user_ident/picture_1269_topiclist.jpg) Sep 11, 2016 by Diver | 5 | Sep 12, 2016 by Diver |
Strange Critter Jul 16, 2016 by PaulRoberts | 13 | Aug 11, 2016 by PaulRoberts |