Snowfly: A Winter Stonefly

what’s this bug?
We were interested to see a couple of this bug crawling on top of the snow on March 15 near Niagara Falls Ontario in a provincial park where there are horseback riders and dog walkers. Is it a common insect?
Nancy Cook

Hi Nancy,
Winter Stoneflies, known as Snowflies, are not rare, but are very seasonal. They are one of the few insects that are active when there is still snow on the ground.

2 thoughts on “Snowfly: A Winter Stonefly”

  1. I have a bug that looks alot like this one flying in my house. it lands on my ceiling in my kitchen it seems to have appeared after we brought home items bought at a ronald macdonald house. Do you think thats what it might be?


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