Winter Stonefly or Snowfly

Late winter bug… another snowfly?
March 21, 2010
Hello! This photo was taken today (21 Mar 10) inside my house. We are right above the Petawawa River. These bugs take over the outside of my house around this time each year, covering the front and back doors, and eventually make their way inside. The one photographed is only about 1 cm long, but the fully grown ones are brown and can be about 3 cm (1″) long with wings on their backs. The small ones don’t really fly (“fall with style” maybe) but the bigger ones flutter around a little bit.
Thank you so much! My neighbour and I have been going crazy trying to figure out who these visitors are each year.
J. Ross
Petawawa, Ontario

Hi J,
Thanks for sending in another photo of our Bug of the Month for March, the Winter Stonefly or Snowfly.