Pemphigus trehernei Foster, 1975

on Populus

Pemphogus trehernei on Populus nigra branch

Populus nigra, Voorne’s Duin © Ben van As

gall

globular galls at the base of of a green shoot, green, reddish around the exit opening. The gall is maximally 2.5 cm large, and invariably solitary.

primary hostplants

Salicaceae, monophagous

Populus nigra.


on Tripolium

gall

1-2 mm large aphids on the roots. They are greenish white to yellowish white with greyish white tufts of wax on the abdomen.

secondary hostplants

Asteraceae, monophagous

Tripolium pannonicum subsp. tripolium (= Aster tripolium).

According to Osiadacz & Halaj also on Solidago virgaurea.

notes

the galls on the primary host are only known through experiments where poplars were “inoculated” with Tripolium aphids.

references

Blackman & Eastop (2014), Carter & Danielsson (1993a), Heie (1980a), Osiadacz & Halaj (2014a), Roskam (2009a).

30/12/2016

pub 30.xii.2016 · mod 21.vii.2017