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Photo#766002
Stenonema?

Stenonema?
Madison, Jefferson County, Indiana, USA
April 7, 2013
This big guy came out of my aquarium last month and I suspect it is Stenonema based on its size and because I am fairly certain I only put a few mayfly larvae in there and they were all this species. Can anyone verify that for me?

Hi Andrew
First things first

1; it is a female witch makes it very difficult without knowing the size or having a matching male for comparison.
2; without a photo of the larval skin there is no way for anybody but you to know what the larval abdominal pattern was.

At this point with what we have to work with I believe it is most likely the last remaining Stenonema being femoratum. The reason I feel it is, there are two very visible details.

1; the broken transverse bands at the posterior margins of each abdominal segments.
2; The crowding of the thickened cross veins in the bulla region.

So for now I would agree maybe some else may add to this.

Mack.

 
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