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> > Warmwater Caddis -Any Guesses?



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PaulRobertsFebruary 1st, 2018, 9:43 am
Colorado

Posts: 1776		Hey folks! Hope all is well. I've been on warmwater ponds doing underwater video work. Haven't chased trout in a while. But I did video a small brown being narfed by a larger one! Never know what might happen down there.

Anyway, I have been working out shooting warmwater aquatic microinverts, and I came across these tiny caddis. They are likely fairly early instars as they are minute, and were caught beneath ice cover. They swim quite well with their long bristled oar-like legs. Any guesses?
CrenoFebruary 1st, 2018, 8:58 pm
Grants Pass, OR

Posts: 303		Paul - appears to be a leptercerid, several of which are good swimmers. How small is it? The tapered case is unusual for the swimming genera so maybe it will change it case shape in the later instars. Creno
PaulRobertsFebruary 2nd, 2018, 6:28 am
Colorado

Posts: 1776		Hi Dave, That would make sense. They are tiny -the smallest I'm guessing 1-2mm, the one pictured maybe 3mm. Ah!...The one in the picture got wedged between the glass sheets that made the tiny aquarium I was using. That gap is 2mm -so 2mm is the height on the anterior end of the case. So, yeah, I think 3mm to 4mm for the length of the larger larva.

They are, apparently, pretty common in the Elodea and coontail here.

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