**Female Sweltsa (Sallflies) Stonefly Adult Pictures**

Mayflies

Caddisflies

Stoneflies

Classification

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Plecoptera (Stoneflies)

» Family Chloroperlidae (Sallflies)

» Genus Sweltsa (Sallflies)

These stoneflies--abundant during midday--seemed at first to be flying around with plain yellow bodies, but on closer inspection turn out to have striking, fiery red abdomens. This one keys out to albertensis, gaufini, or lambda, but the key (Baumann et al 1977) doesn't include all current species.

This stonefly was collected from the Madison River on June 30th, 2019 and added to Troutnut.com on July 17th, 2019.

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Female Sweltsa (Sallflies) Stonefly Adult from the Madison River in Montana

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Recent Discussions of this Adult

Sweltsa? 1 Reply »

Posted by Taxon on Jul 18, 2019

Last reply on Jul 18, 2019 by Troutnut

Hi Jason-

My guess would be genus Sweltsa, of which I believe there to be ~8 species in MT. It looks pretty similar to a (mostly) dorsal view of Sweltsa townsesi, which is pictured in American Stoneflies: A Photographic Guide to the Plecoptera by Bill B. Stark, et. al. However, I believe that species is only present in the Northern Sierra Nevada Mountains of CA and NV.

Reply Anyone able to ID this Chloroperlid?

Posted by Troutnut on Jul 17, 2019

I didn't do the best job taking pictures of key characteristics (such as wing venation), but I'm hoping somebody might be familiar with the striking color pattern. I'd love to know the species on this one.

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Female Sweltsa (Sallflies) Stonefly Adult Pictures

Recent Discussions of this Adult

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Jargon Defined:

**Female Sweltsa (Sallflies) Stonefly Adult Pictures**