Troutnut Forum > Specimen Discussion > Chimarra
The Specimen
Microsema (Little Grannoms) Caddisfly Adult
View 5 PicturesThis one has a neat iridescent sheen to its wings.
See the discussion for details on this fly's tentative ID.
View 5 PicturesThis one has a neat iridescent sheen to its wings.See the discussion for details on this fly's tentative ID.
Region: Poconos
Collected May 28, 2007
Added Jun 4, 2007
The Discussion
| Taxon | June 6th, 2007, 6:20 am | |
| Mercer Island, WA Posts: 478 | Jason- That would be Chimarra, most likely C. aterrima, but it could also be either C. obscura or C. socia. Based on that neat black egg mass visible in the ventral view photo, it would also appear that it's a female. | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
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| GONZO | June 6th, 2007, 11:08 am | |
| "Bear Swamp," PA Posts: 866 | Although I have no handy key, I concur with Roger's ID. There are good emergences of Chimarra in most of the medium-to-large Pocono streams in May. It is routine to see hundreds of these clinging to the underside of low-hanging branches or woody debris along the streams. As for the species, it probably is aterrima, although obscura overlaps in most parts of PA and is nearly as common. (C. socia is the least common of the three species found in PA, and is not recorded in the Poconos). | |
| Litobrancha | June 12th, 2007, 3:09 pm | |
| Knoxville TN Posts: 49 | I don't think this is a philopotamid, which lay their eggs singly instead of in large masses.... It is hard to tell from the picture but I would guess it is Micrasema or Lepidostoma, possibly Helicopsyche. | |
| Jason Robinson Research Specialist III UT Knoxville | ||
| GONZO | June 12th, 2007, 4:30 pm | |
| "Bear Swamp," PA Posts: 866 | Hmmm...there are good populations of Micrasema in the stream this specimen came from. They usually have green bodies when they emerge, but like other Brachycentrids, they probably darken considerably after emergence. This might explain why I hadn't noticed this strange sheen on Chimarra wings before. They usually look more velvety, but I'm always seeing things in Jason's photos that I've never noticed with my (increasingly poor) eyes. Thanks for the tip about the eggs, Lito. | |
| Troutnut | June 12th, 2007, 9:42 pm | |
| Fairbanks, AK Posts: 1113 | OK, I've moved it to Microsema for now. | |
| Jason Neuswanger The Troutnut | ||
| GONZO | June 12th, 2007, 9:55 pm | |
| "Bear Swamp," PA Posts: 866 | sp? | |
| Taxon | June 13th, 2007, 4:04 pm | |
| Mercer Island, WA Posts: 478 | Litobrancha- What genus would this one be? | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Litobrancha | June 14th, 2007, 9:55 am | |
| Knoxville TN Posts: 49 | taxon i think they got that one right. kinda hard to tell from the pic though. | |
| Jason Robinson Research Specialist III UT Knoxville | ||
| Creno | December 22nd, 2007, 5:07 pm | |
| Centennial CO Posts: 33 | Folks - This one is indeed a difficult one. I would not conclude Micrasema because the photo shows too many spurs. And I would not conclude Philopotamid because of several characters, including the egg mass Litobrancha noted. How about Theliopsyche, a rarely collected Lepidostomatid? At least Theliopsyche has the furry spurs located as in the photos and a long basal antennal segment. | |
| Creno | December 31st, 2007, 10:43 am | |
| Centennial CO Posts: 33 | Folks - while I still think this is probably Theliopsyche, there was a brief mention of egg masses in this topic. I just ran into a nice specimen of Apatania incerta with the round egg mass still attached. I was going to attach a photo but couldn't figure out how to do it. Are there instructions/procedures for attaching critter photos or is it not allowed? dave | |
| Taxon | December 31st, 2007, 12:37 pm | |
| Mercer Island, WA Posts: 478 | Dave- The (unassisted) manner of posting a photo is inserting the following markup language, except use braces rather than curly braces: {img src=http://...whatever.jpg} Of course, this requires that the photo already be hosted on a server. Alternatively, if one emails photos to Jason, he will host them on this server, and create a posting for you including the accompanying email verbiage. However, since starting grad school, his response would probably be somewhat slower. | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Creno | December 31st, 2007, 1:08 pm | |
| Centennial CO Posts: 33 | Roger - thanks. I don't have server access and I understand the demands of grad school so I will leave the reader to their imagination. The egg mass of Apatania incerta is also spherical. dave | |
| Taxon | December 31st, 2007, 2:21 pm | |
| Mercer Island, WA Posts: 478 | Dave- There are free services like PhotoBucket, which you can use to host photos. I'd certainly like to see any critter photos you have, and I suspect there are others who would as well. | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
| Taxon | December 31st, 2007, 5:25 pm | |
| Mercer Island, WA Posts: 478 | Folks - while I still think this is probably Theliopsyche, there was a brief mention of egg masses in this topic. I just ran into a nice specimen of Apatania incerta with the round egg mass still attached.   | |
| Roger Rohrbeck www.FlyfishingEntomology.com | ||
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