Posted by John Carr on 15-07-2022 14:03
#3
eklans wrote:
I can only name a possible candidate: Euceraphis betulae which feed on Betula pendula.
I have
Euceraphis on birch saplings and an American expert told me species ID of winged forms is difficult and possibly impossible. They are not crop pests, so less studied, and keys prefer apterous forms.
See also
http://www.aphids...htm#Betula