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.

Stream photos

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Zapada cinctipes (Tiny Winter Black) Stonefly Nymph Zapada cinctipes (Tiny Winter Black) Stonefly Nymph

Dorsal view of a Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington

Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.

13 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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Rhyacophila vocala (Green Sedge) Caddisfly Larva Pictures

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."

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

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

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

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

Ruler view of a Rhyacophila vocala (Rhyacophilidae) (Green Sedge) Caddisfly Larva from Mystery Creek #249 in Washington The smallest ruler marks are 1 mm.

This caddisfly was collected from Mystery Creek #249 in Washington on July 25th, 2019 and added to Troutnut.com by Troutnut on July 26th, 2019.

Discussions of this Larva

Rhyacophila hyalinata group

Posted by Creno on Aug 7, 2019

Last reply on Aug 7, 2019 by Creno

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.

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References

Baumann, Richard W. 1975. Revision of the Stonefly Family Nemouridae (plecoptera) : a Study Of The World Fauna At The Generic Level. Smithsonian Contributions to Zoology undef(211): 1-74.