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The Specimen

Lepidostoma (Little Brown Sedges) Little Brown Sedge LarvaLepidostoma (Little Brown Sedges) Little Brown Sedge Larva View 6 PicturesThis one got a little bit damaged in the abdomen when I extracted it from its case. That's a delicate job.
Collected May 6, 2007 from Mongaup Creek in New York
Added to Troutnut.com by on May 18, 2007

The Discussion

TaxonMay 18th, 2007, 2:04 pm
Site Editor
Plano, TX

Posts: 1320
Based on the case, I would think Platycentropus. Can you see if it has prosternal horns extending beyond the head capsule to mentum of labium? See Merrit p. 375 Figure 18.191.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
TroutnutMay 18th, 2007, 3:25 pm
Administrator
Bellevue, WA

Posts: 2704
It doesn't. The prosternal horns only reach to the back of the head. It took about 10 minutes screwing around under a microscope to even see the prosternal horns (the whole thing is about half a centimeter long and the legs really wanted to be in the way). But I finally got a good view, and they are short, so that rules ot Platycentropus. The case seemed like a good match, though.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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