Plant Parasites of Europe

leafminers, galls and fungi

Rhopalosiphum rufulum

Rhopalosiphum rufulum Richards, 1960

on Crataegus, primary host plant

parasite

Apterae 2-3 mm, maroon, mottled with green or yellow, with a pattern of mealy wax.

hostplants

Rosaceae, monophagous

Crataegus.

notes

Originally a species from Canada; until present found in Europe only once on the primary host.


on Acorus, secondary host plant

parasite

Apterae 1-2 mm, dark brown to blak with dark appendages. On the leaves, sometimes in huge numbers (“the plants looked bespattered with black mud”)

host plants

Acoraceae, monofaag

Acorus calamus.

notes

On the secondary host plant in Europe since about 1970.

references

Blackman & Eastop (2017), Heie (1986a), Şenol, Akyildirim Beğen, Görür & Demi̇rtaş (2014a).

Last modified 1.ii.2019