close up damage to the leaves of the chestnut miner moth cameraria ohridella.

aesculus ascopore attack bacteria brittle brown burn canker chancre chancroid chestnut conidial conidium damage destroyed disease dying endangered epidemic fall forest fungal gracillariidae hippocastanum horse ill illness infected insect larva leaf leave lepidoptera miner mining moth mushroom natural nature nitrate parasite pathovars pest phytophthora plant pollution pseudomonas sick syringae tree