Northern Prairie Wildlife Research Center
Caterpillars of Pacific Northwest
Forests and Woodlands
Photo Key to Species
Group A-2 -- Species in group A-2 have two or three pairs of midabdominal prolegs, typically two pairs, one pair each on segments A5 and A6. This group consists of a few species of Geometridae and the Plusiinae of the Noctuidae.
Prolegs on A5 smaller than those on A6
Prolegs on A5 same size as those on A6
Return to Photo Key to Species