Eriosoma lanigerum (Hausmann, 1802)
woolly apple aphid, American blight
on Ulmus, primary host plant
In the older literature it was assumed that this species also, or perhaps originally, occurs in North America and there passes a spring generation on elm. Currently this vision is considered uncertain. In most parts of Europe the species lives permanently on its secondary host.
on Rosaceae, secondary host plants
Malus domestica, Hungary, Mosonamgyaróvár © László Érsek: colony
preferent location of a colony
often on thick branches
detail of a colony
With each moult the mass of wax threads is lost and the aphids are ‘nude’.
Malus spec., Belgium, Antwerp © Chris Snyers: gall
aphids in wax-protected colonies in crevices and bark wounds. Th branches may become disfigues by canker-like swellings. In orchards it is a serious pest.
Rosaceae, narrowly oligophagous
The reference to Prunus amygdalus and “communis” by Dauphin & Aniotsbehere must be a mistake.
Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Barbagallo & Massimino Cocuzza (2014a), Bellmann (2012a), Blackman & Eastop (2014), Börner & Franz (1956a), Braggion (2013a), Buhr (1964b, 1965a), Danielsson (1979a), Dauphin & Aniotsbehere (1997a), Deckert & Deckert (2016a), Heie (1980a), Hellrigl (2004a), Lambinon, Carbonelle & Claerebout (2015a), Lambinon & Schneider (2004a), Lampel & Meier (2003a), Redfern & Shirley (2011a), Ripka, Reider & Szalay-Marzsó (1998a), Roskam (2009a), Tambs-Lyche & Heie (1994a).