Associations
provided by BioImages, the virtual fieldguide, UK
Foodplant / internal feeder
larva of Chaetostomella cylindrica feeds within capitulum of Carduus pycnocephalus
Foodplant / spot causer
amphigenous colony of Ramularia hyphomycetous anamorph of Ramularia cynarae causes spots on live leaf of Carduus pycnocephalus
Foodplant / feeds on
larva of Terellia serratulae feeds on Carduus pycnocephalus
In Great Britain and/or Ireland:
Foodplant / gall
larva of Urophora solstitialis causes gall of capitulum of Carduus pycnocephalus
Foodplant / feeds on
larva of Urophora stylata feeds on Carduus pycnocephalus
Remarks: Other: uncertain
