Troutnut Forum > Specimen Discussion > Hydropsychidae (?)
The Specimen
Cheumatopsyche (Little Sister Sedges) Caddisfly Pupa
View 10 PicturesThis is the first fully formed caddis pupa (technically, a pharate adult (Pharate adult: Caddisflies are considered to be pupae during their transformation from larva into adult. This transformation is complete before they're ready to emerge. The emerging insect we imitate with the "pupa" patterns we tie is technically called a pharate adult. It is a fully-formed adult caddisfly with one extra layer of exoskeleton surrounding it and restricting its wings.)) that I've collected and photographed alive and healthy. I'll put a video of this specimen online soon, too.
View 10 PicturesThis is the first fully formed caddis pupa (technically, a pharate adult (Pharate adult: Caddisflies are considered to be pupae during their transformation from larva into adult. This transformation is complete before they're ready to emerge. The emerging insect we imitate with the "pupa" patterns we tie is technically called a pharate adult. It is a fully-formed adult caddisfly with one extra layer of exoskeleton surrounding it and restricting its wings.)) that I've collected and photographed alive and healthy. I'll put a video of this specimen online soon, too.Region: Northeast
Collected Apr 14, 2007
Added Apr 22, 2007
The Discussion
| GONZO | April 23rd, 2007, 6:11 pm | |
| "Bear Swamp," PA Posts: 876 | This looks like a hydropsychid to me, but I'd be happy to have comments from the experts. | |
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| Earlfishman | April 23rd, 2007, 9:56 pm | |
| Posts: 17 | With abdominal gills like that, and the hook plates on ab. 3-5 it sure looks like a Hydropsychidae to me as well. | |
| Litobrancha | April 24th, 2007, 8:42 am | |
| Knoxville TN Posts: 49 | probably cheumatopsyche... in hydropsyche/ceratopsyche the hooks at the posterior end of the abdomen are longer on the outside (distal), this one looks longer medially a la cheumatopsyche. jason did you get this critter to emerge from the pupal shuck? | |
| Jason Robinson Research Specialist III UT Knoxville | ||
| GONZO | April 24th, 2007, 11:47 am | |
| "Bear Swamp," PA Posts: 876 | Earl--thanks for the confirmation. Lito--I suspected that this might be Cheumatopsyche, but I had no key. Thanks for the information about one of the distinguishing characters. Size, emergence timing, and wing/body colors were the things that made me lean toward Cheumatopsyche. | |
| Troutnut | April 24th, 2007, 12:16 pm | |
| Fairbanks, AK Posts: 1115 | I tried to let it emerge, but no luck. | |
| Jason Neuswanger The Troutnut | ||
| Earlfishman | April 24th, 2007, 9:42 pm | |
| Posts: 17 | Lito, Out of curiosity, do you have a reference for a key that takes Trichop pupae past family? That would be a handy thing to have access to. Earl | |
| Creno | December 22nd, 2007, 7:25 pm | |
| Centennial CO Posts: 35 | Earfishman - there is some information available for separating pupae to genus. Info for the hydropsychids is in Ross 1944. | |
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