insects of green spruce gall aphid sacchiphantes viridis synonyms: chermes viridis, sacchiphantes abietis viridis on the needles

closeup spruce coniferous branch pine natural evergreen needle forestry plant green forest leaf tree wood nature picea glauca die growing aphid dying summer european greenfly twig labrador tea rust damage dead galls white fresh infection environmental mountains deforestation disease macro bark gall needles grow pathology spores yellow outdoor europe fauna pest norway symptom insects sacchiphantes viridis synonyms: chermes abietis shoots caused spruce common spruces