Caterpillars of Pacific Northwest
Forests and Woodlands
Photo Key to Species
Group B-1b -- Subgroups: Body wall smooth, except monarch butterfly - Species in group B-1a have a smooth body wall that is not extended into bumps, warts, tubercles, or horns. As an exception note the caterpillar of the monarch butterfly has four long filamentous tubercles.
Colors in rings
Return to Photo Key to Species in Group B-1b
Next Section -- Straight longitudinal lines
