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Pdcox has attached these 2 pictures to aid in identification. The message is below.
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PdcoxOctober 30th, 2019, 8:07 am
Kansas city

Posts: 3
Hi, just a rookie here. Found this bug in a mountain freestone stream central Colorado. Curious about the fed/orange bands around body. Any help in ID?
Thanks
CrenoOctober 30th, 2019, 10:29 am
Grants Pass, OR

Posts: 296
the red spots look like mites. Fairly common on aquatic insects
TaxonOctober 30th, 2019, 11:39 am
Site Editor
Plano, TX

Posts: 1295
Hi Paul-

I believe the stonefly nymph you found in a central Colorado stream to be of family Perlodidae. With regard to what you describe as the orange bands, I suspect that to be a parasitic infestation of orange-colored water mites.
Roger Rohrbeck
www.FlyfishingEntomology.com
PdcoxOctober 30th, 2019, 1:26 pm
Kansas city

Posts: 3
thank you
PdcoxOctober 30th, 2019, 1:27 pm
Kansas city

Posts: 3
thanks

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