Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

The "Fountain Flats" stretch of the Firehole was fishable in the morning after an uncharacteristically cold August night.

From the Firehole River in Wyoming

Stream photos

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Doroneuria baumanni (Golden Stone) Stonefly Nymph Doroneuria baumanni (Golden Stone) Stonefly Nymph

Dorsal view of a Doroneuria baumanni (Perlidae) (Golden Stone) Stonefly Nymph from Sears Creek in Washington

9 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.

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.

Caddisfly Species Rhyacophila vocala (Green Sedges)

This is a common mountain caddisfly.

Where & when

Time of year : Early to mid-Summer

In 9 records from GBIF, adults of this species have been collected during July (33%), June (22%), April (22%), May (11%), and August (11%).

In 5 records from GBIF, this species has been collected at elevations ranging from 1700 to 4721 ft, with an average (median) of 3750 ft.

Species Range

source

Map of specific collection sites

Larva & pupa biology

Substrate: Boulders

Environmental tolerance: Prefers cold water

Specimens of the Caddisfly Species Rhyacophila vocala

1 Larva

Rhyacophila vocala (Green Sedge) Caddisfly Larva

11 Pictures

Lateral view of a Rhyacophila vocala (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mystery Creek #249 in Washington

This specimen is very tentatively placed in Rhyacophila vocala, but see the caveats given by Dave Ruiter in its identification: "There are two species (hyalinata and vocala) currently within the group and this looks closest to R. vocala. It is likely, however, there are several undescribed species in the group and this is one of those."

Collected July 24, 2019 from Mystery Creek #249 in Washington

Added by Troutnut on July 26, 2019

Collected July 24, 2019 from Mystery Creek #249 in Washington and added by Troutnut on July 26, 2019

Start a Discussion of Rhyacophila vocala

References

LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.