Adelges tardus (Dreyfus, 1888)
on Picea
Picea abies, Dwingeloo, 2.viii.2021 © Arnold Grosscurt
opened gall
Picea abies, Duitsland, Germany, Triberg, 850 m, 23.vii.2018 © Cor Zonneveld
a single gall
another specimen
Picea abies, France, dép. Corrèze, Peyrelevade, 793 m, 18.vi.2020 © Catherine Reymonet: alatae
gall
Yellowish white ananas gall; the edges of de openings-slits are not ciliate. Strongly resembling the gall of A. laricis, but the gall ripens much later, in August-October. Contrary to laricis the galls occur in groups, mixed with galls from preceding years. The alatae are blackish, with much wool.
host plants
Pinaceae, monophagous
Picea abies, glauca, pungens, sitchensis.
Contrary to A. laricis there is no host alternation.
references
Albrecht (2017a), Béguinot (2002h, 2007b, 2012a), Bellmann (2012a), Börner & Franz (1956a), Buhr (1965a), Burton, Carbonnelle, Ellis & Schneider (2019a), Burton, Ellis & Schneider (2022a), Covassi & Binazzi (1981a), Dauphin & Aniotsbehere (1997a), Deckert & Deckert (2016a), Hellrigl (2004a), Lehmann & Hannover (2016a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2003a, 2012a), Wojciechowski, Depa, Halgoš ao (2016a).