Northern Prairie Wildlife Research Center
Caterpillars of Pacific Northwest
Forests and Woodlands
Photo Key to Species
Group B-1a -- Subgroups: Body wall with swellings - Species in group B-1a have the body wall extended into assymetrical swellings, short tubercles, small warts; or a horn on A8.
Middorsal horn absent on A8
Return to Photo Key to Species in Group B-1a
Next Section -- Middorsal horn present on A8