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), 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).