Cotoneaster

In Great Britain and/or Ireland:
Foodplant / sap sucker
adult of Acanthosoma haemorrhoidale sucks sap of leaf of Cotoneaster
Remarks: season: 4-mid-7, 8-9 or later

Foodplant / open feeder
caterpillar of Acronicta psi grazes on live leaf of Cotoneaster

Foodplant / internal feeder
larva of Anomoia purmunda feeds within fruit of Cotoneaster

Foodplant / pathogen
Armillaria mellea s.l. infects and damages Cotoneaster

Foodplant / saprobe
fruitbody of Armillaria tabescens is saprobic on dead root of Cotoneaster
Remarks: Other: uncertain

Foodplant / saprobe
stromatic perithecium of Cytospora leucostoma forma cotoneastri is saprobic on dead bark of Cotoneaster

Foodplant / saprobe
resupinate fruitbody of Eichleriella deglubens is saprobic on fallen branch of Cotoneaster

Foodplant / gall
Eriosoma lanigerum causes gall of white woolly-covered branch of Cotoneaster
Remarks: season: 3-

Foodplant / pathogen
Erwinia amylovora infects and damages flower of Cotoneaster

Foodplant / gall
hypophyllous aecium of Gymnosporangium clavariiforme causes gall of live leaf of Cotoneaster
Remarks: season: 7-9+
Other: minor host/prey

Foodplant / gall
aecium of Gymnosporangium confusum causes gall of live fruit of Cotoneaster
Other: unusual host/prey

Foodplant / saprobe
densely encrusting Lepidosaphes ulmi is saprobic on live branch of Cotoneaster

Foodplant / web feeder
communal caterpillar of Malacosoma neustria feeds from web on live leaf of Cotoneaster

Foodplant / web feeder
communal larva of Neurotoma saltuum feeds from web on leaf of Cotoneaster

Foodplant / web feeder
hypophyllous, colonial Panonychus ulmi feeds from web on live leaf of Cotoneaster
Remarks: season: 4-

Foodplant / sap sucker
Parthenolecanium corni sucks sap of live shoot of Cotoneaster

Foodplant / sap sucker
Pulvinaria vitis sucks sap of live stem of Cotoneaster
Remarks: season: 5-6

Foodplant / web feeder
communal caterpillar of Scythropia crataegella feeds from web on live leaf of Cotoneaster
Remarks: season: 5-

Foodplant / web feeder
caterpillar of Trachycera suavella feeds from web on live leaf of Cotoneaster

Foodplant / saprobe
fruitbody of Tubaria dispersa is saprobic on buried, mummified berry of Cotoneaster
Remarks: season: late spring, early autumn
Other: minor host/prey

Foodplant / saprobe
subgregarious to densely scattered, covered then erumpent, blackish grey with paler roundish flat disc stroma of Cytospora coelomycetous anamorph of Valsa ambiens is saprobic on twig of Cotoneaster
Remarks: season: 10-5

Foodplant / internal feeder
caterpillar of Zeuzera pyrina feeds within live bud of Cotoneaster