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Photo#50608
Aquatic Larva - Leuctra laura

Aquatic Larva - Leuctra laura
Groton, Caledonia County, Vermont, USA
May 2, 2006
Size: 8mm

Moved
Moved from Leuctra.

Leuctra laura
Pretty sure of the id now, having collected adults where the larvae were earlier. The larva is undescribed, and is easily recognized by the enlarged segments of the cerci (tails). A spring species.

Don
Thanks for the correction. If you could post the picture of the real L sibleyi, that would be nice to see the differences. Moved from Leuctra sibleyi.

 
Leuctra laura maybe
It is the only species for which the larvae are not known, and the original description was based on a specimen from the White Mountains. If I have a good one of sibleyi I will post it. The key is the setation of the cerci, and often when the body is in wonderful focus the cerci are not. Your specimen above is outstanding in the swollen and elongate cercal segments - the other species are much harder to recognize from a photograph.

Leuctra sp.
Just photographed and identified some true L. sibleyi, and they are not this species. As far as I can tell, this larva has never been described, though it is not rare in the White Mountains.

Moved
Moved from Leuctra.

Leuctra sibleyi
Was just sorting some White Mountain Leuctra today, and remembered this one as I found L. sibleyi in a number of stream samples.

Leuctridae: Leuctra sp.
It looks like a beat-up Leuctra (as Andy noted), though I just noticed the cercal segments are really long and thick. Hmmm.

Stonefly
I can't ID farther but it is a stone. The big plates on the back and 2 tails (one of which is broken off) are dead givaways.

 
Rolled-winged Stonefly
Thanks for the help Don and Andy.

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