Foodplant / parasite
velvety colony of Alternaria dematiaceous anamorph of Alternaria dennisii parasitises live stem of Senecio jacobaea
Remarks: season: 9
In Great Britain and/or Ireland:
Foodplant / parasite
sporangium of Bremia lactucae parasitises live leaf of Senecio jacobaea
Other: unusual host/prey
Foodplant / feeds on
larva of Cheilosia bergenstammi feeds on root of Senecio jacobaea
Foodplant / parasite
uredium of Coleosporium tussilaginis parasitises live Senecio jacobaea
Foodplant / visitor
adult of Conops visits for nectar and/or pollen flower of Senecio jacobaea
Foodplant / visitor
imago of Drymeia hamata visits for nectar and/or pollen capitulum of Senecio jacobaea
Other: major host/prey
Foodplant / internal feeder
larva of Ensina sonchi feeds within capitulum of Senecio jacobaea
Remarks: Other: uncertain
Foodplant / feeds on
larva of Haplothrips senecionis feeds on live flower of Senecio jacobaea
Remarks: season: 5-10
Foodplant / internal feeder
larva of Icterica westermanni feeds within capitulum of Senecio jacobaea
Foodplant / saprobe
immersed pseudothecium of Kalmusia clivensis is saprobic on dead stem of Senecio jacobaea
Remarks: season: 5-6
Foodplant / saprobe
pseudothecium of Leptosphaeria ogilviensis is saprobic on dead stem of Senecio jacobaea
Foodplant / miner
larva of Liriomyza erucifolii mines leaf of Senecio jacobaea
Foodplant / open feeder
adult of Longitarsus gracilis grazes on leaf of Senecio jacobaea
Foodplant / open feeder
adult of Longitarsus jacobaeae grazes on leaf of Senecio jacobaea
Plant / resting place / within
puparium of Melanagromyza aeneoventris may be found in stem of Senecio jacobaea
Plant / resting place / within
puparium of Melanagromyza dettmeri may be found in stem of Senecio jacobaea
Plant / resting place / within
puparium of Melanagromyza eupatorii may be found in stem of Senecio jacobaea
Foodplant / saprobe
immersed pseudothecium of Nodulosphaeria derasa is saprobic on dead stem of Senecio jacobaea
Foodplant / false gall
larva of Noeeta pupillata causes swelling of capitulum of Senecio jacobaea
Foodplant / miner
larva of Ophiomyia senecionina mines stem of Senecio jacobaea
Foodplant / saprobe
loosely gregarious, sometimes linearly arranged, covered then projecting pycnidium of Phomopsis coelomycetous anamorph of Phomopsis achilleae var. senecionis is saprobic on dead stem of Senecio jacobaea
Foodplant / visitor
adult of Physocephala rufipes visits for nectar and/or pollen capitulum of Senecio jacobaea
Plant / resting place / on
puparium of Phytomyza alpina may be found on leaf of Senecio jacobaea
Other: sole host/prey
Foodplant / sap sucker
adult of Plagiognathus chrysanthemi sucks sap of Senecio jacobaea
Remarks: season: late 6-9(10)
Foodplant / parasite
Podosphaera fusca parasitises live Senecio jacobaea
Foodplant / parasite
Podosphaera xanthii parasitises live Senecio jacobaea
Foodplant / parasite
aecium of Puccinia dioicae var. schoeleriana parasitises live Senecio jacobaea
Foodplant / parasite
telium of Puccinia glomerata parasitises live Senecio jacobaea
Foodplant / parasite
telium of Puccinia lagenophorae parasitises live Senecio jacobaea
Foodplant / spot causer
amphigenous colony of Ramularia hyphomycetous anamorph of Ramularia filaris var. filaris causes spots on live leaf of Senecio jacobaea
Foodplant / spot causer
numerous, epiphyllous, immersed, pale brown, perforating pycnidium of Septoria coelomycetous anamorph of Septoria senecionis-silvaticae causes spots on live leaf of Senecio jacobaea
Remarks: season: 7-10
Foodplant / internal feeder
larva of Sphenella marginata feeds within capitulum of Senecio jacobaea
Foodplant / saprobe
colony of Stachybotrys dematiaceous anamorph of Stachybotrys dichroa is saprobic on dead stem of Senecio jacobaea
Remarks: season: 4-9
Foodplant / internal feeder
larva of Trupanea stellata feeds within capitulum of Senecio jacobaea
Other: major host/prey
Foodplant / miner
larva of Trypeta zoe mines leaf of Senecio jacobaea