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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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Stonefly Family Chloroperlidae (Sallflies)

These stoneflies, the "little yellows" and "little greens," are quite common Summer fauna. They are spread out in a mix between the different genera. The common name for them is Sallfly.

Where & when

In 215 records from GBIF, adults of this family have mostly been collected during June (32%), July (24%), May (20%), August (11%), and April (11%).

In 88 records from GBIF, this family has been collected at elevations ranging from 49 to 11201 ft, with an average (median) of 8579 ft.

Family Range

Hatching behavior

Time of day : Morning

Egg-Laying behavior

Time of day: Afternoon and evening

Specimens of the Stonefly Family Chloroperlidae

1 Male Adult
6 Female Adults
14 Adults
11 Nymphs

2 Streamside Pictures of Chloroperlidae Stoneflies:


Start a Discussion of Chloroperlidae

References

Stonefly Family Chloroperlidae (Sallflies)

Taxonomy
Genus in Chloroperlidae: Alloperla, Kathroperla, Paraperla, Suwallia, Sweltsa
8 genera (Alaskaperla, Bisancora, Haploperla, Plumiperla, Rasvena, Sasquaperla, Triznaka, and Utaperla) aren't included.
Family Range
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