Pemphigus immunis Buckton, 1896

on Populus, primary host plant

gall

red or green, c. 4 cm large, globular purse gall at the base of a still green shoot. The gall is so strongly curved that the broad, apical opening almost touches the base.

host plants

Salicaceae, narrowly monophagous

Populus x canadensis, carolinensis, euphratica, nigra.


on Euphorbia, secondary host plant

gall

aphids at the roots; copious amounts of wax.

host plants

Euphorbiaceae, narrowly oligophagous

Euphorbia helioscopia, peplus, ? stricta.

On annual species.

synonyms

Pemphigus lichtensteini Tullgren, 1909.

references

Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Barbagallo & Massimino Cocuzza (2014a), Barbagallo & Pollini (2014a), Blackman & Eastop (2014), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Docters van Leeuwen (1936a), Hellrigl (2004a), Nieto Nafría, Mier Durante, Binazzi & Pérez Hidalgo (2002a), Osiadacz & Halaj (2014a), Petrović (1998a), Suay Cano & González Funes (1998c), Tomasi (2003a, 2012a), Wojciechowski, Depa, Halgoš ao (2016a).

mod 2.iii.2019