The caterpillars of several moths feed on the Northern Pitcher Plant. These species include: Exyra fax (Epauletted Pitcher Plant Moth), whose caterpillars feed on the inner surface of the tubular leaves; Papaipema appassionata (Pitcher Plant Borer Moth), whose caterpillars feed on the roots; and Endothenia hebesana (Dull-Barred Endothenia), whose caterpillars feed within the seed capsules. This last moth is polyphagous (feeds on many plants), while the other moths feed only on Sarracenia spp.