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Species Papilio canadensis - Canadian Tiger Swallowtail

swallowtail caterpillar? - Papilio canadensis Tiger Swallowtail - Papilio canadensis Eastern Tiger Swallowtail - Papilio canadensis Canadian Tiger Swallowtail - Papilio canadensis group puddling #2 - Papilio canadensis Swallowtail? - Papilio canadensis - female Tiger Swallowtail - Papilio canadensis - male Perhaps - Papilio canadensis (Canadian Tiger Swallowtail) ? - Papilio canadensis Butterfly - Papilio canadensis
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Papilionoidea (Butterflies and Skippers)
Family Papilionidae (Swallowtails, Parnassians)
Subfamily Papilioninae
Tribe Papilionini (Fluted Swallowtails)
Genus Papilio
Species canadensis (Canadian Tiger Swallowtail)
Synonyms and other taxonomic changes
formerly considered a subspecies of the Eastern Tiger Swallowtail (P. glaucus); given full species status by Hagen et al (1991), and others, based on detailed physiological and genetic characteristics.
Pterourus canadensis--sometimes this and related species are split out from Papilio.
wingspan 53-90 mm
adult: inner margin of hindwing has wide black stripe (whereas the otherwise similar - though larger - Eastern Tiger Swallowtail has a thin black stripe in that area). Compare images.
larva: mature larvae are dark green, with two spots that look like eyes on the swollen section of the body behind the head; this creates a snake-like profile. Immature larvae are brown and white, resembling bird droppings (CBIF)
northern US, Alaska, and every province and territory of Canada, north to the tundra
mainly open woodlands and adjacent areas in the south but also in urban and suburban yards and gardens
north of the treeline, found in the vicinity of dwarf willow and other shrubs
adults fly from May to July
larvae feed on a wide variety of plants, including ash, cherry, poplar, and willow
Life Cycle
one generation per year
See Also
Eastern Tiger Swallowtail: BugGuide, CBIF
Western Tiger Swallowtail: BugGuide, CBIF
Internet References
pinned adult images plus description, distribution, biology, etc. (Canadian Biodiversity Information Facility)
pinned adult images plus US distribution map and other info (Butterflies and Skippers of North America;