Moved from Butterflies (excluding skippers).

Smaller with slightly different markings and wing shape, with body larger in proportion to wings. The "species" has waffled back and forth in the literature as a subspecies of the Eastern Tiger (P. glaucus), or as a distinct species. Because many authors ignore subspecies, it has been badly confused with the Eastern Tiger Swallowtail. The two do apparently hybridize sometimes where they meet, but seem to be different things. Both are in Ontario (the Eastern only in the far south). Further west in Alberta, British Columbia, and a bit into the edge of adjacent United States, there is blending or at least hybridization with the Western Tiger (P. rutulus) too, and it is difficult to draw a line between those two. They actually look a lot more similar to one another than either does to the Eastern Tiger (The Western Tiger has less orange, and averages perhaps a bit larger than the Canadian Tiger, but not so large as the Eastern).