Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Species Phytomyza gymnostoma - Onion leaf miner

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Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Acalyptratae")
Family Agromyzidae (Leaf Miner Flies)
Subfamily Phytomyzinae
Genus Phytomyza
No Taxon (Subgenus Napomyza)
Species gymnostoma (Onion leaf miner)
Range
Originally from central Europe, now from UK to Siberia and recently in the Northeast USA.
Season
Spring and fall as adults, summer and winter as pupae
Food
Larvae mine leaves of Allium, most often leeks because leaves are available during both flight periods.
Remarks
Other leaf miners in Allium are species of Liriomyza with yellow scutellum. They do not cause wilting leaves.
Internet References
Pest alert (Penn State)