The adult's wingspan is between 70 and 85 mm. It is often confused with the hermit sphinx (
Sphinx eremitus) throughout their overlaying areas, but unlike
S. eremitus it has no white spot. The forewing of this species is gray brown with black streaks along the veins, interrupted by white lines along the outer margin. The hindwing is patterned with black and white bands. Sphinx canadensis MHNT Cut 2010 0 473 - Larsson's Camp Ontorio Canada - male dorsal.jpg|
Sphinx canadensis ♂ Sphinx canadensis MHNT Cut 2010 0 473 - Larsson's Camp Ontorio Canada - male ventral.jpg|
Sphinx canadensis ♂ △ == Biology ==