Eriosoma flavum Jancke, 1930

on Ulmus

gall

leaf between two side veins coloured pinkish-brown, strongly bulging upwards; underside with wax-covered aphids.

primary hostplants

Ulmaceae, monophagous

Ulmus glabra, minor, procera.


on Cydonia, Pyrus

gall

small yellow aphids at the roots, at half a meter depth.

secondary hostplants

Rosaceae, oligophagous

Cydonia oblonga; Pyrus communis.

synonyms

Schizoneura flavum.

references

Blackman & Eastop (2014), Börner & Heinze (1957a), Redfern & Shirley (2011a), Roskam (2009a).

21/08/2014

mod 20.xi.2017