- Source: Cystiphora sonchi
Cystiphora sonchi is a species of gall midge in the family Cecidomyiidae. It is native to Eurasia, but has been introduced to North America as a biocontrol of sow thistles. The larvae cause small, circular galls on the leaves of the host plants. Several species of parasitic wasps use the larvae as hosts.
This species was first described as Cecidomyia sonchi by Swiss entomologist Johann Jacob Bremi-Wolf in 1847.
