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Taenionema atlanticum (Willowfly) Stonefly Nymph Pictures

This stonefly was collected from Mystery Creek #62 on April 1st, 2007 and added to Troutnut.com on April 3rd, 2007.

Recent Discussions of this Nymph

Podmosta identification... 6 Replies »
Posted by PeterO on Apr 25, 2007
Last reply on Apr 25, 2007 by Troutnut
This is actually a specimen of the family Taeniopterygidae, probably Taenionema atlanticum. Notice the large sternal plate at the apex of the abdomen. This plate is used in drumming behavior. Adult Taeniopterygids mimic the sounds of male Ruffed Grouse in an attempt to draw in female grouse to parasitize. They attach themselves at the base of the beak and feed until gorged. They then mate, smoke a cigarette, lay some eggs, and die. On a serious note, all Taeniopterygids except species of Taeniopteryx, have the drumming plate. Nemourids are lacking this feature. There is a difference in the second tarsal segment as well. Happy Bugging!

PeterO
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