Cystiphora sonchi

Cystiphora sonchi is a species of gall midge in the family Cecidomyiidae.^[1][2][3] It is native to Eurasia, but has been introduced to North America as a biocontrol of sow thistles.^[4] The larvae cause small, circular galls on the leaves of the host plants.^[4][5] Several species of parasitic wasps use the larvae as hosts.^[4]

Cystiphora sonchi
Cystiphora sonchi on Sonchus arvensis. Found in Bērzi village near Bauska city, Latvia
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Cecidomyiidae
Genus:	Cystiphora
Species:	C. sonchi
Binomial name
Cystiphora sonchi (Bremi, 1847)
Synonyms[1]
Cecidomyia sonchi Bremi, 1847

This species was first described as Cecidomyia sonchi by Swiss entomologist Johann Jacob Bremi-Wolf in 1847.^[6]