The adelgid bug causes a gall on the shoots of Spruce (Picea). The gall is elongated, often curved, and formed of the swollen bases of adjacent spruce needles fused to the shoot. The nymphs live inside chambers within the gall.  Unlike other adelgid galls on this host, the needles remain sticking out of the gall, although shorter than usual. 

Other Adelgid galls on spruce

Provide photographs of gall

Spruce trees

Common (ref.: British Plant Galls, Redfern & Shirley, 2023)

Not known; few records; probably under-recorded