hemlock woolly adelgid - adelges tsugae

adelges tsugae adelgid aphid arboriculture arborist awareness bad brewster bug closeup coniferous connecticut conservation control deforestation destructive detrimental disaster disease eating england environmental evergreen fir forest gardening green habitat hemlock hwa infestation infested insect introduced invasive leaf life maintenance nature parasite pest pesticide protection science species tree vermont woolly york