What's That Bug? does not endorse extermination

Is this a fishfly?
Location: Gardiner, Montana
August 10, 2011 11:35 pm
Dear Daniel~
I give up! I thought this was some kind of fishfly, but I can not find a match anywhere. This photo was taken on a bridge spanning the Yellowstone River in Gardiner, Montana, about three weeks ago. There were many, many of these insects flying across the bridge all at once and down towards the river. When one of them landed on the bridge itself, I snapped this photo. That’s all I could get before it took off again. It was during sunset, late July, just near the northern entrance to Yellowstone. This one was about 2 – 2½ inches long. Thank you!
Signature: Dori Eldridge

Giant Stonefly

Hi Dori,
Though this Giant Stonefly resembles a Fishfly, it is actually in a different and unrelated insect order, though both have aquatic larvae and are associated with freshwater bodies of water.

What's That Bug? does not endorse extermination
Location: Montana

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