Trioza rhamni (Schrank, 1801)
on Rhamnus
Rhamnus cathartica, Hongarije, Kimle, 17.iv.2019 © László Érsek; galls, upper side
underside, with eggs
eggs
detail
17.v.2019, galls, upper side
underside with larve
young larvae
young larva
another image
older larva
honeydew production
9.vi.2019, imago
Rhamnus cathartica, Belgium, prov. Luxembourg, Resteigne © Jean-Yves Baugnée
Rhamnus cathartica, België, prov. Luxemburg, Hotton, Renissart: nymph © Jean-Yves Baugnée
Rhamnus cathartica, Belgium, prov. Namuur, Couvin, Frasnes, Carrière du Nord © Stéphane Claerebout
parasite
In northern Europe one, in central Europe two generations. Hibernation as imago in conifers, probably also in leaf litter.
hostplants
Rhamnaceae, narrowly monophagous
Rhamnus cathartica, pallasii.
references
Béguinot (2002e, 2006b, 2012a), Buhr (1965a), Burckhardt (1983a, 2002a), Conci, Rapisarda & Tamanini (1996a), Dauphin & Aniotsbehere (1997a), Hansen & Greve (1999a), Hellrigl (2004a), Hodkinson & White (1979a), Jerinić-Prodanović (2010a), Kanturski & Drohojowska (2013a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon & Schneider (2004a), Lauterer & Dorow (2010a), Malenkovský & Lauterer (2012a), Ossiannilsson (1992a), Ouvrard, Burckhardt & Cocquempot (2015a), Redfern & Shirley (2011a), Seljak (2006a, 2020a), Tomasi (2003a), White & Hodkinson (1982a).