Dreyfusia piceae (Ratzeburg, 1844)
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.
Abies alba, amabilis, balsamea, cilicica, concolor, fraseri, grandis, lasiocarpa, nordmanniana, procera, sibirica.
This Dreyfusia too has accidentally been introduced into North America.
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) .