Keiferia lycopersicella, the tomato pinworm, is a moth of the family Gelechiidae. It is found in warm areas in Mexico, California, Texas, Georgia, Florida, Hawaii, Cuba, Hispaniola and the Bahamas. It has also been reported from greenhouses in Delaware, Mississippi, Missouri, Pennsylvania and Virginia.

Tomato pinworm
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Gelechiidae
Genus:	Keiferia
Species:	K. lycopersicella
Binomial name
Keiferia lycopersicella (Walsingham, 1897)
Synonyms
Eucatoptus lycopersicella Walsingham, 1897 Phthorimaea lycopersicella Gnorimoschema lycopersicella Phthorimaea lenta Meyrick, 1917 Phthorimaea lycopersicella Busck, 1928

The wingspan is 9–12 mm. There are seven to eight generations per year.

The larvae feed on Solanaceae species, including Lycopersicon esculentum, Solanum melongena, Solanum tuberosum, Solanum carolinense, Solanum xanthii, Solanum umbelliferum and Solanum bahamense. Young larvae use silk to spin a tent. Under the cover of this tent they create a tunnel into a leaf of their host. Continued feeding results in a blotch-like mine which can usually be found on that same leaf. The third and fourth larval instars feed from within tied leaves or folded portions of a leaf. They may also enter stems or fruits.