**Stonefly Genus Suwallia (Sallflies)**

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Plecoptera (Stoneflies)

» Family Chloroperlidae (Sallflies)

» Genus Suwallia (Sallflies)

Species in Suwallia
Suwallia pallidulaSallfly	0	0

6 species aren't included.

Common Name

Match	Common Name
	Sallflies

Pictures Below ↓

Only Suwallia pallidula is known to be commonly encountered on trout streams.

Pictures of 6 Stonefly Specimens in the Genus Suwallia:

Specimen Page:12

Suwallia (Sallflies) Stonefly Nymph

View 9 Pictures

Collected July 17, 2011 from the Gulkana River in Alaska
Added to Troutnut.com by Troutnut on July 20, 2011

Suwallia pallidula (Sallfly) Stonefly Adult

View 2 Pictures

Collected July 1, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 1, 2011

Suwallia pallidula (Sallfly) Stonefly Nymph

View 6 PicturesThis specimen keys out to Suwallia, for which I did not find any nymph species keys. However, I'm placing it in Suwallia pallidula because I caught a few adults in the same spot that closely resembled the abundant nymphs and keyed them out to species. Features I noted under the microscope when keying this specimen to genus included apical (Apical: Close to the apex; tip or end.) hairs of cercal segments that were directed at posterior (Posterior: Toward the back of an organism's body. The phrase "posterior to" means "in back of.") angles, and the longest apical (Apical: Close to the apex; tip or end.) hairs of distal (Distal: Far from the point of attachment or origin; near the tip.) segments were shorter than their following segment.

Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to Troutnut.com by Troutnut on July 30, 2019

Specimen Page:12

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Jargon Defined:

Apical: Close to the apex; tip or end.

Distal: Far from the point of attachment or origin; near the tip.

Nymph: The juvenile, underwater stages of mayflies, stoneflies, dragonflies, and damselflies and other aquatic insects whose juvenile stages are covered by hard exoskeletons. The word can also refer to the fishing flies which imitate these creatures, in which case it is used as a blanket term for flies imitating any underwater stage of an invertebrate (except for crayfish and leeches).

Posterior: Toward the back of an organism's body. The phrase "posterior to" means "in back of."