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Photo#46193
aquatic nymph - Leptophlebia intermedia

aquatic nymph - Leptophlebia intermedia
Bethlehem, Coos County, New Hampshire, USA
March 28, 2006
Size: 12.5mm
Found under a rock in a pool of water near a river.

Leptophlebia intermedia
It looks like and is the correct size for a Leptophlebia, and with the distinct band near the apex of the femora it is most likely Leptophlebia intermedia. they should be emerging about now, about a month early due to this warm weather.

 
WOW!!!
Identified right down to species. Thanks Don.

Gills?
Are those winglike things beside the abdomen gills?

 
Mayfly nymph
They are, indeed, gills. The mayflies (Ephemeroptera) have these external abdominal gills. You can also see the remains of the three 'tails' off of the tip of the abdomen. It is not uncommon for them to break off. This is a very diverse order; a variety for just about every freshwater niche.

 
Thanks Kurt
This is the first mayfly nymph I've seen, and those gills and red eyes looked really odd.

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