Food Plant: Picea abies (Norway Spruce), Picea sitchensis (Sikta Spruce)

Mine: August-April

Notes: Initially mines the terminal leaves of side shoots then feeds in a spinning of bunched leaves, entangled with brown silk and frass (as shown). The greenish-white colour indicates the presence of a larva. The larva leaves this spinning in the spring (which discolours and falls off) and pupates in a cocoon spun in leaf litter.

Data: 13.xi.2013, Coe Crags, Northumberland, VC68

Image:© Alan Fairclough