1. Who Am I?

2. Insects

3. Phylum Arthropoda (means jointed foot) Class Insecta includes all the true insects Class Arachnida spiders, mites, ticks

4. Classification of Insects Phylum Arthropoda: Segmented body Exoskelton Open circulatory system Ventral nervous system Paired segmented appendages Respiration by gills or trachea Separate sexes

5. Insect characteristics Six legs Three body regions (head,thorax,abdomen) Antennae Wings (most) Chewing or piercing- sucking mouthparts

6. Insect Anatomy Exoskelton Protection and support Receptor of stimuli Movement

7. Body region functions Head taste, feel, eat Thorax walk,jump,fly Abdomen breathe, digest, excrete, reproduce

8. Head Antennae- sensory Eyes- sight compound or simple Mouthparts: piercing/sucking, rasping/sucking, sponging,chewing/lapping, cutting/sponging, siphoning

9. Examples of Mouthparts Chewing: beetle, wasp, caterpillar, ant Siphoning: butterfly, moth Piercing/sucking: flea,mosquito,aphid Rasping/sucking: thrip Sponging: housefly Chewing/lapping: honeybee Cutting/sponging: deerfly, horsefly

10. Thorax Legs- movement -3 pairs Wings- movement & air/blood transport - one pair of wings: mosquitoes - two pairs of wings: dragonflies - no wings: fleas

11. Abdomen Copulation, egg-laying and stinging Includes spiracles for gas exchange Ovipositor for egg-laying -may be modified as a stinger Prolegs -not true legs but outgrowths of abdomen

12. Life Cycle Complete Incomplete None/Ametabolous

13. Complete Life Cycle Stages –Egg –Larvae –Pupa –Adult Examples: –Ant –Bee –Beetle –Weevil –Flea http://www.ndsu.nodak.edu/entomology/topics/growth.htm

14. Incomplete Life Cycle Examples –Cricket –Aphid –Grasshopper –Cicada http://www.ndsu.nodak.edu/entomology/topics/growth.htm

15. No Life Cycle -Ametabolous Examples –Silverfish –Springtail http://www.ndsu.nodak.edu/entomology/topics/growth.htm

16. Economic Damage None/Predatory Destroys Fruit/Flower Destroys Vegetative Parts (roots/leaves) Destruction by Plant Fluid Removal

17. None/Predatory Examples- –Honeybee –Lady Beetle

18. Destroys Fruit/Flower Examples –Bean leaf beetle –Corn earworm USDA, ARS ipmworld.umn.edu/chapters/hammond.htm

19. Destroys Vegetative Parts (roots/leaves) Examples –Japanese beetle –European corn borer USDA, ARS

20. Destruction by Plant Fluid Removal Example: –Aphids –Leafhopper USDA, ARS

21. Slide Credits Phil Nixon Monica David, UIUC