1. PLANT DAMAGE BY INSECTS Alexandre Latchininsky, UW CES Entomologist
Cheyenne, January 22, 2007

2. INSECT MOUTHPARTS
Chewing - mandibles
Piercing-sucking beak
Sucking - proboscis
Plant damage results from feeding, which depends on the type of mouthparts

3. Leaf feeding damage
Adult
Colorado potato beetle
Larvae

4. Root Weevil and its damage to peony
© A. Latchininsky 2006
© A. Latchininsky 2006

5. Leaf cutter bee and its damage
© A. Latchininsky 2006

6. Skeletonized leaf feeding
Alfalfa weevil
Leaf beetle larvae

7. Heavy feeding damage

8. Leaf feeding and shotholes
European corn borer
Armyworm

9. Leaf feeding (underside)
Mexican bean beetle
Larva
Adult

10. Plant tissue damage discoloration
Thrips

11. Two-spotted spider mite

12. Leaf curling and distortion
Aphids

13. Leaf curling and distortion
Thrips

14. Stink bug damage

15. Leaf mining damage
Agromyza nana

16. Gall-forming and leaf-mining pests… Eriophyoid mite damage to aspen
© A. Latchininsky 2006
Eriophyoid mite damage to aspen
© A. Latchininsky 2006
Liriomyza fly damage to goosefoot

17. Leaf-mining damage Liriomyza fly damage to goosefoot
© A. Latchininsky 2006
Liriomyza fly damage to goosefoot

18. Plant disease vector Pierce’s disease symptoms Glassy-winged
sharpshooter

19. Arthropod-caused plant galls

20. Gall-forming damage Eriophyoid mite damage to aspen
© A. Latchininsky 2006
Eriophyoid mite damage to aspen

21. Spittlebug damage

22. Stem borer damage

23. White Pine Weevil Damage

24. Horntail Wasp damage
Pigeon tremex

25. Bark beetle damage

26. Which Insect Caused the Damage?