oak gall on a mature oak branch, closeup macro nature image showing reddish parasite growth on green leaves with insect damage, textured bark and morning dew in a woodland ecology study scene

oak gall leaves closeup nature macro insect tree oak gall oak apple tree branch green leaves dew drops macro photography close up insect damage caterpillar feeding bark texture natural habitat woodland scene autumn light morning dew ecology study entomology sample plant pathology forest conservation outdoor nature sap exudate brown gall leaf curl blurred background bokeh shallow depth selective focus seasonal decay biodiversity pest sign wildlife detail bota