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Agnetina capitata (Golden Stone) Stonefly Adult Pictures

 This stonefly emerged in my aquarium, and unfortunately I severely damaged its wings just trying to catch it. It's still an interesting specimen, especially since I was able to also photograph the nymphal shuck (
Here's an underwater view of the pupal shucks of several already-emerged Brachycentrus numerosus caddisflies.
Here's an underwater view of the pupal shucks of several already-emerged Brachycentrus numerosus caddisflies.
Shuck: The shed exoskeleton left over when an insect molts into its next stage or instar. Most often it describes the last nymphal or pupal skin exited during emergence into a winged adult.
)
it emerged from. I was surprised by just how light it was shortly after emerging. I photographed it a couple days later when it had darkened considerably; it was a pale, almost pastel yellow at first.


This stonefly was collected from Aquarium on May 1st, 2007 and added to Troutnut.com on May 3rd, 2007.

I forgot to photograph it on the ruler, so I did it a couple days later, but the fly had died and shriveled a little bit by then.  Agnetina capitata (Golden Stone) Stonefly Adult from Aquarium in New York
I forgot to photograph it on the ruler, so I did it a couple days later, but the fly had died and shriveled a little bit by then.

Recent Discussions of this Adult

Agnetina capitata 6 Replies »
Posted by DOS on Mar 28, 2009
Last reply on Mar 29, 2009 by GONZO
I had plans to meet a few friends tonight at a local sports bar to watch the UFC fights, but as I got out of the shower, I found that a industrious capitata had hatched in my aquarium and managed to escape its mesh canopy and was mockingly buzzing the lights in my steamy bathroom. Well, several hours later and a six pack of Saranac Black and Tan, I'm still at home and have a question. On page 37 of Schwibert's Nymphs Volume II, he diagnoses the adult at 28mm. My specimen falls more than 10mm short. Is it possible I have misidentified this specimen or is it a simple case of size variation?


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ReplyAgnetina
Posted by GONZO on May 15, 2007
Agnetina--probably capitata.
Reply

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