close up of walnut leaf gall mite in spring.

abnormal aceria agricultural agriculture agronomy biological blister botanical branch close closeup cultivate cultivated damage destroyed disease environment erineus eriophyes flora foliage food fruit gall galls garden green growth health illness infestation insect leaf leaves macro mite natural nature nut nutshell orchard organic parasite persi persian pest pixiversal plague shell spring summer tree tristriatus vegan walnut walnuts