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Cherylkorca | February 18th, 2020, 9:17 pm | |
Posts: 4 | Hello, I did recently sampled our home water the Bitterroot river in SW Montana and I collected 2 stoneflys specimens and I know for fact one of them is Skwala nymph but the smaller one wanted to verify if is Nemoura nymph , the problem I am having is that this stone fly nymph appear to be much larger in length that my good reference book Aquatic insects by Rick Hafele shows ? The do overlap each other i emergance time , Capnia first ( smallest of 3 ) than Nemoura and than biggest Skwala Thank you for anyone who could help out with this nymph ID , I did include collage with adult Nemoura and hope to be a nymph in same order , but not so sure about the nymph ?? | |
Millcreek | February 19th, 2020, 7:05 am | |
Healdsburg, CA Posts: 356 | My guess is that it's not a Nemouridae, but a Perlodidae. The easiest way to tell the difference is to look at the mouth. If you have access to a microscope or a magnifying glass take a look at the glossae and paraglossae, they should be more or less the same size in Nemouridae. In Perlodidae the paraglossae should be much larger than the glossae. | |
Leskorcala | February 24th, 2020, 9:39 pm | |
Posts: 16 | Hello , Thank you for a great tip to distinguish two however i have bad eyes ( blind on one ) and use magnifying glass 8X but i can not see it.I did take several closeup images with my camera , perhaps I can show it to you. I need to figure out first how to attach some images. | |
Title | Replies | Last Reply |
Chloroperlidae In Sweltsa Stonefly Nymph by Earlfishman | 0 | |
Re: Stone fly from Spain In the Identify This! Board by Isidro | 1 | May 8, 2008 by Isidro |
Re: More Calamoceratidae photos In the Identify This! Board by Crepuscular | 21 | Feb 19, 2013 by Gutcutter |
Re: The small dark stoneflies of Winter & early Spring - confused? In General Discussion by Entoman | 10 | Mar 3, 2012 by Entoman |
Re: Stonefly? In the Identify This! Board by Pdcox | 10 | Dec 8, 2019 by Taxon |
Re: What is this species of stonefly? In the Identify This! Board by Simon | 3 | Jan 3, 2022 by Taxon |
Re: Another request - how many women are on this site? In General Discussion by Jmd123 | 40 | Dec 12, 2011 by Keystoner |
Re: General Stream Reading Terminology In General Discussion by Bcvizina | 18 | Feb 10, 2011 by PaulRoberts |
Re: Question In Female Claassenia sabulosa Stonefly Adult by Flymonster | 10 | Sep 10, 2012 by PaulRoberts |
Re: Help with Early Spring Stoneflies In the Identify This! Board by Wiflyfisher | 13 | Mar 30, 2021 by Taxon |