dry oak leaf with wasp galls, on the ground close up detail, top view

apple autumn background ball botanical botany bug close closeup cynipidae cynips damage detail disease dry ecology ecosystem environment foliage forest gall gallae galls ground growth harmful hymenoptera infected insect isolated larva leaf leaves macro natural nature nutgall oak parasite parasitic parasitism pest plant quercus quercusfolii top tree view wasp wasps wild woodland yellow