green spruce gall aphid (sacchiphantes viridis, sacchiphantes abietis viridis) on the needles of larch tree

plant flower branch green leaf nature tree grass wildflower shrub blossom herb twig produce frost thorns evergreen insects spruce gall aphid sacchiphantes viridis synonyms chermes abietis needles larch homopterans adelges wildlife disease picea glauca summer dead yellow pine mountains infection forest damage white spores fauna galls coniferous europe european greenfly needle scale insect conifer die growing dying bark pest environmental grow natural labrador tea rust deforestation