| Armillaria root rots |
Armillaria spp. |
1 |
| butternut canker |
Sirococcus clavigignenti-juglandacearum |
1 |
| Elytroderma needle cast of pine |
Elytroderma deformans |
1 |
| forest tent caterpillar |
Malacosoma disstria |
1 |
| gypsy moth |
Lymantria dispar |
31 |
| Hypoxylon canker of aspen |
Entoleuca mammata |
1 |
| lace bugs |
Corythucha spp. |
1 |
| oak sawfly |
Caliroa petiolata |
1 |
| oak wilt |
Ceratocystis fagacearum |
1 |
| Phellinus heartrots |
Phellinus spp. |
1 |
| robustus conk |
Phellinus robustus |
1 |
| smaller European elm bark beetle |
Scolytus multistriatus |
1 |
| snow and ice damage (snow load) |
|
1 |
| Strumella canker |
Urnula craterium |
1 |