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.

My then-girlfriend, now-wife took this picture with my camera.

From Toughannock Creek in New York

Stream photos

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Limnephilidae (Giant Sedges) Caddisfly Larva Limnephilidae (Giant Sedges) Caddisfly Larva

Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington

This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.

10 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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Polycentropus (Brown Checkered Summer Sedge) Caddisfly Larva Pictures

Polycentropus (Polycentropodidae) (Brown Checkered Summer Sedge) Caddisfly Larva from the Delaware River in New York

Lateral view of a Polycentropus (Polycentropodidae) (Brown Checkered Summer Sedge) Caddisfly Larva from the Delaware River in New York

Dorsal view of a Polycentropus (Polycentropodidae) (Brown Checkered Summer Sedge) Caddisfly Larva from the Delaware River in New York

Ruler view of a Polycentropus (Polycentropodidae) (Brown Checkered Summer Sedge) Caddisfly Larva from the Delaware River in New York The smallest ruler marks are 1 mm.

This caddisfly was collected from the Delaware River in New York on May 13th, 2007 and added to Troutnut.com by Troutnut on May 18th, 2007.

Discussions of this Larva

polycentropus

1 replies

Posted by Litobrancha on May 19, 2007

Last reply on Dec 22, 2007 by Creno

probably polycentropus, like earlfisherman said a good closeup of the anal claws would be helpful. esp any teeth or serrations on said claws. nice pics.

Polycentropodidae

Posted by Earlfishman on May 19, 2007

Last reply on May 19, 2007 by Earlfishman

Based on the head pattern, this larvae might be Polycentropus sp. or Neureclipsis sp., I find myself leaning towards the former but I've been wrong before. It's hard to tell for sure without close up photos of anal claws and legs. You can tell it isn't a Rhyacophilid because there isn't a sclerite on top of ab seg number 9.

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