The palmerworm (Dichomeris ligulella) is a moth of the family Gelechiidae. It is found in eastern North America.

Dichomeris ligulella
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Gelechiidae
Genus:	Dichomeris
Species:	D. ligulella
Binomial name
Dichomeris ligulella Hübner, 1818
Synonyms
Elasmion ligulella Hübner, 1808 Rhinosia pometella Harris, 1853 Chaetochilus conturbatellus Fitch, 1853 Ypsolophus contubernatellus Fitch, 1853 Chaetochilus malifoliellus Fitch, 1856 Ypsolophus pauciguttellus Clemens, 1863 Ypsolophus flavivittellus Clemens, 1864 Ypsolophus quercipominella Chambers, 1872 Ypsolophus reedella Chambers, 1872

The wingspan is 15–18 mm. Adults are on wing from April to October. There is one generation per year.

The larvae feed on apple, hackberry, hazel and oak. The larvae skeletonize leaves and fold or roll them during feeding. It is occasionally responsible for widespread defoliation of hardwood species. Outbreaks rarely last more than one or two years and usually occur during unusually hot and dry springs.