Associations
provided by BioImages, the virtual fieldguide, UK
Foodplant / internal feeder
larva of Apion semivittatum feeds within stem node of Mercurialis annua
Foodplant / spot causer
amphigenous colony of Cercospora dematiaceous anamorph of Cercospora mercurialis causes spots on live leaf of Mercurialis annua
Remarks: season: 8-9
In Great Britain and/or Ireland:
Foodplant / spot causer
hypophyllous, often circinate, elongate and confluent aecium of Melampsora populnea causes spots on live leaf of Mercurialis annua
Remarks: season: 4-6
