Troutnut Forum > Specimen Discussion > Can you provide a size for this specimen?
The Specimen
Brachycentridae (Apple Caddis and Grannoms) Caddisfly Pupa
View 3 PicturesI photographed this one recently dead. It's hard to keep caddis pupae alive for very long in a collection container.
View 3 PicturesI photographed this one recently dead. It's hard to keep caddis pupae alive for very long in a collection container.Region: Upper Midwest
Collected May 18, 2004
Added Jan 25, 2006
The Discussion
| GONZO | November 8th, 2006, 2:08 pm | |
| "Bear Swamp," PA Posts: 973 | Jason- I hate to ask you to dig through your specimen vials, but I'm curious to know if you can give a size reference for this one. I've stared at it many times. My first impression was Brachycentrus, but that impression was based entirely on color and markings. I haven't been able to find any definitive keys to verify this id (though I may be missing something). May 18 does seem a little on the late side for most of the common Eastern/Midwestern Brachycentrus spp. But, we do have a peak emergence of a Micrasema sp. around that time on the Brodheads. This is the reason I was wondering about the size. I also wanted to call attention to this specimen in the hope that Litobrancha, Taxon, or someone else might be able to end my puzzlement. (I'm also curious about that bright spot on the scutellum. I can't recall noticing that on other Brachycentrids--if that's what this is.) | |
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| Troutnut | November 8th, 2006, 3:23 pm | |
| Fairbanks, AK Posts: 1124 | Unfortunately I wasn't saving my specimens in vials back then. This was the first caddis pupa I photographed in the spring when I started this site. If I remember correctly, it was about hook size 16-18. I'll move it to Brachycentrus for now based on your guess. The river where I collected it is in the far north of Wisconsin, which typically has timing more like the Adirondacks than PA or the Catskills or most of the famous MI water. | |
| Jason Neuswanger The Troutnut | ||
| GONZO | November 8th, 2006, 5:33 pm | |
| "Bear Swamp," PA Posts: 973 | Thanks Jason, I'm still hoping that one of the bugmeisters will comment on this one, because there are a few things I find confusing. | |
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