Header image
Enter a name
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.

Dorsal view of a Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington
This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Rhyacophila carolina (Green Sedge) Caddisfly Larva Pictures

This specimens shows that the name "green rockworm" doesn't quite fit all Rhyacophila larvae, even though it does fit the majority. This is actually the first of their larvae that I've found in a different color. I'm not sure if it's because of the species or because this is a young one, but I have found equally small green larvae, so I'm guessing it's the species.

Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York
Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York
Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York
Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York
Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York
Ventral view of a Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York
Dorsal view of a Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York
Ruler view of a Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York The smallest ruler marks are 1 mm.
Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York
Rhyacophila carolina (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mongaup Creek in New York

This caddisfly was collected from Mongaup Creek in New York on May 6th, 2007 and added to Troutnut.com by Troutnut on May 18th, 2007.

Discussions of this Larva

carolina?
3 replies
Posted by Litobrancha on Jun 12, 2007
Last reply on May 16, 2011 by Peter_O
fits carolina in the key, but something doesn't look right to me, head shape doesn't really look like carolina and it is rather hairy. love to see an adult!!!

Start a Discussion of Larva

Rhyacophila carolina (Green Sedge) Caddisfly Larva Pictures

Collection details
Location: Mongaup Creek, New York
Date: May 6th, 2007
Added to site: May 18th, 2007
Author: Troutnut
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy