Header image
Enter a name
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 Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
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.

Hesperophylax (Silver Striped Sedge) Caddisfly Larva Pictures

Based on both range maps and key characteristics, this larva is either Hesperophylax designatus, Hesperophylax alaskensis, or Hesperophylax occidentalis. However, the species key in Parker & Wiggins (1985) cannot separate these species as larvae.

Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Case view of a Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Ruler view of a Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington The smallest ruler marks are 1 mm.
Dorsal view of a Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Ventral view of a Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington
Hesperophylax (Limnephilidae) (Silver Striped Sedge) Caddisfly Larva from the South Fork Snoqualmie River in Washington

This caddisfly was collected from the South Fork Snoqualmie River in Washington on June 13th, 2019 and added to Troutnut.com by Troutnut on June 15th, 2019.


Start a Discussion of Larva

References

Hesperophylax (Silver Striped Sedge) Caddisfly Larva Pictures

Collection details
Location: South Fork Snoqualmie River, Washington
Date: June 13th, 2019
Added to site: June 15th, 2019
Author: Troutnut
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy