Gilletteella cooleyi (Gillette, 1907)
on Picea, primary hostplant
Picea sitchensis, France, dép. Corrèze, Peyrelevade, 800 m, 14.vii.2020 © Catherine Reymonet

Picea sitchensis, Heerde, de Dellen, 29.x.2011 © Arnold Grosscurt

old gall, cut longitudinally
gall
The gall is elongated, curved, and the needles are not strongly shortened.
host plants
Pinaceae, monophagous
Picea abies, alcoquiana, engelmannii, mariana, orientalis, pungens, sitchensis.
on Pseudotsuga, secondary host plant
Pseudotsuga menziesii, France, dép. Yvelines, Moisson, 2.vi.2018 © Pierre Duhem

Pseudotsuga menziesii, Boswachterij Nunspeet © Hans Jonkman

Pseudotsuga menziesii, Loenen (gld) © Arnold Grosscurt: feeding damage

wax-covered female with eggs

Pseudotsuga menziesii, Landgoed Tongeren © Hans Jonkman: old feeding damage

detail
host plants
Pinceae, monofaag
Pseudotsuga menziesii.
synonyms
Adelges cooleyi.
notes
Originally a species from North America. When in Europe Picea species are not present the species can live permanently, asexually, and without inducing galls, on douglas fir.
references
Albrecht (2017a), Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Béguinot (2006a,b, 2007b), Bellmann (2012a), Börner & Franz (1956a), Buhr (1965a), Carter (1971a), Chinery (2011a), Covassi & Binazzi (1981a), Cumming (1959a), Dauphin & Aniotsbehere (1997a), Görür, Işik, Akyürek & Zeybekoğlu (2009a), Hellrigl (2004a), Kollár (2007a, 2011a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon & Schneider (2004a), Lampel & Meier (2003a), Redfern & Shirley (2011a), Ripka, Reider & Szalay-Marzsó (1998a), Roskam (2009a), Schneider (2016a), Soria, Carrascal & del Estal (1996a), Wojciechowski, Depa, Halgoš ao (2016a).