| ants |
|
2 |
| bagworms |
|
4 |
| black locust |
Robinia pseudoacacia |
2 |
| cicadas |
|
1 |
| defoliation due to unknown cause |
|
1 |
| dieback |
|
2 |
| drought |
|
1 |
| fragrant sumac |
Rhus aromatica |
3 |
| honeylocust |
Gleditsia triacanthos |
1 |
| horned oak gall |
Callirhytis cornigera |
3 |
| iron deficiency |
|
1 |
| Japanese beetle |
Popillia japonica |
9 |
| lady beetle |
|
1 |
| magnolia scale |
Neolecanium cornuparvum |
1 |
| Norway spruce |
Picea abies |
1 |
| obscure scale |
Melanaspis obscura |
2 |
| pine weevil |
Hylobius pinastri |
1 |
| pinhole borer |
Platypus spp. |
2 |
| radiation |
|
1 |
| rhinoceros beetle |
Xyloryctes jamaicensis |
1 |
| root lifting, soil heaving, and windthrow |
|
1 |
| sawfly |
Macremphytus spp. |
2 |
| sawtooth oak |
Quercus acutissima |
1 |
| spider mites |
|
1 |
| termites |
|
5 |
| twolined chestnut borer |
Agrilus bilineatus |
1 |
| unknown scale |
|
3 |
| wood borers |
|
3 |