Forest Health > Insects and Diseases publication
CONCEPTS of Entomology

FIG. 3: Some Common Insects That Damage Trees

1. Lace bug sucking sap from a leaf.
2. Gall wasp feeding in a leaf gall.
3. Tip moth boring in the tip of a branch.
4. Scale insects feeding on sap from leaves and shoots.
5. Twig girdler biting through a branch.
6. Egg case of a tent caterpillar on a branch
7. Twig swollen by a gall insect.
8. Red spider mite feeding on a leaf.
9. Leaf folded and deformed by thrips feeding.
10. Aphid feeding on a plant sap.
11. Bark beetle boring into a stem.
12. Caterpillar chewing on a leaf.
13. Long-horned beetle and roundheaded borer boring in stem.
14. Leafminer feeding between leaves.
15. White grub feeding on roots.

BACK

Bulletin No. 196-A | Printed October, 1983 | Contact the Forest Health Section