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Spruce gall aphids - Sacchiphantes spp. and Adelges spp. | deutsch

Symptoms    Galls 1 to several cm in size, at first green, later on brown, shape of a pineapple, on the base of shoots (Sacchiphantes) or on the end of the shoots (Adelges); yelowing and loss of needles distal to the galls, shoot distortion, dieback
Impact    Very common on Norway spruce; heavy infestation causes shoot- and twig-dieback as well as growth anomalies; most of the species of spruce gall aphids have larches as alternate hosts, where they cause damage to needles; hardly any possibility or errors.
Control    If possible, removing of the unripe galls; insecticides: application in winter or at the time of flushing (see official register of Plant Protection)
Hosts   Spruce;
Affected plant parts    Needle; Shoot/Twig/Branch; Stem;


Galls of Spruce gall aphids
Gall at the base of a shoot


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