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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Dorsal view of a Grammotaulius betteni (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This is a striking caddis larva with an interesting color pattern on the head. Here are some characteristics I was able to see under the microscope, but could not easily expose for a picture:
- The prosternal horn is present.
- The mandible is clearly toothed, not formed into a uniform scraper blade.
- The seems to be only 2 major setae on the ventral edge of the hind femur.
- Chloride epithelia seem to be absent from the dorsal side of any abdominal segments.
Based on these characteristics and the ones more easily visible from the pictures, this seems to be Grammotaulius. The key's description of the case is spot-on: "Case cylindrical, made of longitudinally arranged sedge or similar leaves," as is the description of the markings on the head, "Dorsum of head light brownish yellow with numerous discrete, small, dark spots." The spot pattern on the head is a very good match to figure 19.312 of Merritt R.W., Cummins, K.W., and Berg, M.B. (2019). The species ID is based on Grammotaulius betteni being the only species of this genus known in Washington state.
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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Apatania (Early Smoky Wing Sedge) Caddisfly Adult Pictures

Ruler view of a Apatania (Apataniidae) (Early Smoky Wing Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York The smallest ruler marks are 1 mm.
Lateral view of a Apatania (Apataniidae) (Early Smoky Wing Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York
Apatania (Apataniidae) (Early Smoky Wing Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York
Apatania (Apataniidae) (Early Smoky Wing Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York
Apatania (Apataniidae) (Early Smoky Wing Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York
Apatania (Apataniidae) (Early Smoky Wing Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York
Ventral view of a Apatania (Apataniidae) (Early Smoky Wing Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York
Apatania (Apataniidae) (Early Smoky Wing Sedge) Caddisfly Adult from the West Branch of the Delaware River in New York

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

Discussions of this Adult

Anyone recognize this caddisfly?
18 replies
Posted by Troutnut on May 18, 2007
Last reply on Jul 31, 2011 by Entoman
The pictures aren't nearly good enough for me to actually follow a key, but I'm pretty curious. This species was out in smaller numbers alongside prolific Brachycentrus flies. Based on the long antennae I'm going to initially guess Leptoceridae, but I don't think that's right. It just doesn't look like the other Leptoceridae on this site, and then antenna, though long, aren't as long as theirs.

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References

Apatania (Early Smoky Wing Sedge) Caddisfly Adult Pictures

Collection details
Location: West Branch of the Delaware River, New York
Date: May 13th, 2007
Added to site: May 18th, 2007
Author: Troutnut
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