In Great Britain and/or Ireland:
Foodplant / parasite
fruitbody of Agrocybe cylindracea parasitises branch of Populus nigra 'Italica'
Other: minor host/prey

Foodplant / spot causer
acervulus of Marssonina coelomycetous anamorph of Drepanopeziza populorum causes spots on live leaf of Populus nigra 'Italica'
Remarks: season: late summer
Other: major host/prey

Foodplant / gall
Pemphigus bursarius causes gall of leaf (petiole) of Populus nigra 'Italica'
Remarks: season: 5-7

Foodplant / gall
Pemphigus spirothecae causes gall of spiral-shaped gall leaf (petiole) of Populus nigra 'Italica'
Remarks: season: spring

Foodplant / gall
fundatrigenia of Thecabius affinis causes gall of live, down-folded leaf of Populus nigra 'Italica'