prociphilus bumeliae. a colony of hairy, wax-covered aphid secretions on an ash tree

frost branch flower winter snow plant freezing leaf nature blossom tree ice twig grass spring shrub green prociphilus bumeliae colony hairy wax-covered aphid secretions ash damage danger wingless larvae insect invasion parasites gardening plague suck pest animal infestation macro aphidoidea parasite farming biological aphididae magnification curl aphid flora isolated fraxinifolli diseases pathology disease isolated white pathogen phytopathology distorted diseased white background plant shriveled leaves leaf branch curled tree shape plum colony insect tufted vetch bean