Painted Lady Butterflies - Recent sightings of this butterfly warrant additional information to help scouting. We link you to the Canadian Biodiversity of Canada website and the Butterflies of Canada which includes incredible information including the following image of Vanessa cardui below.
Access the actual webpage and additional information for this species including comparative photos of similar species, description of range, habitat and flight season plus the fact that this species normally does not overwinter in Canada.
The Butterflies of Canada © 2002, by Ross A. Layberry, Peter W. Hall, and J. Donald Lafontaine. University of Toronto Press; 1998. Specimen photos courtesy of John T. Fowler.