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.

Upper Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

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Female Skwala (Large Springfly) Stonefly Adult Female Skwala (Large Springfly) Stonefly Adult

Lateral view of a Female Skwala (Perlodidae) (Large Springfly) Stonefly Adult from Mystery Creek #308 in Washington

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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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Genus ID

Argia Damselfly Nymph

3 Pictures

Dorsal view of a Argia (Coenagrionidae) Damselfly Nymph from Fall Creek in New York

My friend Willy captured this early instar damselfly nymph and brought it to me for identification. It is more robust and stocky at this early stage than the spindly appearance of the later instars, and its appearance is less familiar.

Collected August 27, 2005 from Fall Creek in New York

Added by Troutnut on April 14, 2006

Collected August 27, 2005 from Fall Creek in New York and added by Troutnut on April 14, 2006

DMM
Posts: 34

DMM on Nov 18, 2006November 18th, 2006, 7:19 pm EST

May be Argia, detailed pictures of the prementum are always good for the ID of Odonata. Odonata can be tricky in general though, so the more details the better.

David

SalmonfliesPteronarcys californica

Troutnut Forum › Specimen Discussion › Genus ID