Eriosoma grossulariae (Schüle, 1887)
on Ulmus
gall
aphids on leaves that, at only one side of the midrib, are almost totally rolled in downwards and yellowish in colour. The aphids (immature alatae) are light green (contrary to E. ulmi that makes similar galls, and has often been confused with grossulariae).
primary host plants
Ulmaceae, narrowly monophagous
Ulmus americana, glabra, minor, procera.
on Ribes
gall
aphids at the roots. They are 1-2 mm large, yellowish-white to pale red in white wax wool.
secondary host plants
Grossulariaceae, monophagous
Ribes sanguineum, uva-crispa.
Rarely Ribes rubrum.
references
Bellmann (2012a), Blackman & Eastop (2014), Carter & Danielsson (1993a), Danielsson (1982a), Heie (1995a), Nieto Nafría, Mier Durante, Binazzi & Pérez Hidalgo (2002a), Pérez Hidalgo, Martínez Peláez & Nieto Nafría (2001a), Pérez Hidalgo & Umaran del Campo (2013a), Petrović (1998a), Redfern & Shirley (2011a), Ripka, Reider & Szalay-Marzsó (1998a).