Dreyfusia piceae (Ratzeburg, 1844)

on Abies

gall

No host plant alternation. The feeding activities of the aphids have hardly any recognisable effect on Abies alba. In other, exotic, species strong swellings and malformations of the branches are may occur, mainly near the ends of the shoots (“gout disease”). The aphids are small blackish brown, with white wax; they are not attended by ants.

hostplants

Pinaceae, monophagous

Abies alba, amabilis, balsamea, cilicica, concolor, fraseri, grandis, lasiocarpa, nordmanniana, procera, sibirica.

synonyms

Adelges piceae.

notes

This Dreyfusia too has accidentally been introduced into North America.

predators

Aphidoletes thompsoni.

references

Albrecht (2017a), Blackman & Eastop (2014), Buhr (1964b), Carter (1971a), Dauphin & Aniotsbehere (1997a), Hellrigl (2004a), Houard (1908a), Kollár (2007a 2011a), Lampel & Meier (2003a), Redfern & Shirley (2011a), Roskam (2009a), Skuhravá, Skuhravý & Meyer (2014a) .

pub 4.iv.2017 · mod 22.viii.2017