Ten most common insect and mite pests encountered at the University of Maryland Campus in 1981.
| Pest | % of total arthropod pests (1262) |
|---|---|
| Cankerworms | 29 |
| Pine tip moths | 17 |
| Scales | 15 |
| Lacebugs | 11 |
| Forest tent caterpillar | 6 |
| Eastern tent caterpillar | 6 |
| Mites | 6 |
| Leaf miners | 4 |
| Aphids | 2 |
| Bagworms | 1 |
| Total | 97 |