Pachypappa populi (Linnaeus, 1758)

on Populus, primary host plant

gall

large upwards embossments of the leaf disk, pale green, yellowish to somewhat reddish. The galled leaf is one at the base of a young shoot; the leaves above have turned fiery red.

hostplants

Salicaceae, narrowly monophagous

Populus tremula.


on Picea, secondary host plant

gall

Apterae 0.5-3 mm, pale, on thin mycorrhizal root ends, in large colonies covered by flocculent wax. Some populations live permanently on the secondary host plant. Not attended by ants.

hostplants

Pinaceae, monophagous

Picea abies.

synonyms

Pachypappella populi; Pachypappa grandis Tullgren, 1925.

references

Albrecht (2015a, 2017a), Béguinot (2012a), Blackman & Eastop (2014), Börner & Franz (1956a), Buhr (1965a), Danielsson (1974a), Heie (1980a), Tomasi (2014a).

mod 4.x.2017