Trioza rhamni (Schrank, 1801)

on Rhamnus

Trioza rhamni: galls on Rhamnus cathartica

Rhamnus cathartica, Hongarije, Kimle, 17.iv.2019 © László Érsek; galls, upper side

Trioza rhamni: galls on Rhamnus cathartica

underside, with eggs

Trioza rhamni: eggs

eggs

Trioza rhamni: egg

detail

Trioza rhamni: galls on Rhamnus cathartica

17.v.2019, galls, upper side

Trioza rhamni: galls on Rhamnus cathartica

underside with larve

Trioza rhamni: larvae

young larvae

Trioza rhamni: larva

young larva

Trioza rhamni: larva

another image

Trioza rhamni: larva

older larva

Trioza rhamni: larva

honeydew production

Trioza rhamni:  imago

9.vi.2019, imago

Trioza rhamni gall on Rhamnus cathartica

Rhamnus cathartica, Belgium, prov. Luxembourg, Resteigne © Jean-Yves Baugnée

Trioza rhamni: nymph on Rhamnus cathartica

Rhamnus cathartica, België, prov. Luxemburg, Hotton, Renissart: nymph © Jean-Yves Baugnée

Trioza rhamni: nymph on Rhamnus cathartica

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), Tomasi (2003a), White & Hodkinson (1982a).

mod 4.i.2020