Contarinia tanaceti Rübsaamen, 1921
The flower heads are weakly disfigured. Inside a number of orange-yellow larva live free among the achenes, that are severely stunted; the flowers heads themselves are hardly changed. Larvae able to jump. Univoltine or bivoltine, hibernation in the soil.
Bruun (2015a), Buhr (1965a), Rübsaamen (1921a), Skuhravá & Skuhravý (1988a, 2021a: 275), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a).