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ENTOMOLOGY

ENTOMOLOGY. INSECT NUMBERS. ▪ 10 million species world wild ▪ 100,000 in United States ▪ more insects per square mile than the entire world population of people ▪ 10,000 insects are classified as pests. Beneficial Insects. ▪ Bees - ▪ Pollinating flowers ▪ Beeswax ▪ Silk

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ENTOMOLOGY

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  1. ENTOMOLOGY INSECT NUMBERS ▪10 million species world wild ▪100,000 in United States ▪more insects per square mile than the entire world population of people ▪10,000 insects are classified as pests

  2. Beneficial Insects ▪Bees - ▪Pollinating flowers ▪Beeswax ▪Silk ▪Biological Control ▪Assist in Decomposition

  3. Harmful Insects ▪Destroy Plants ▪Eat Seeds ▪Eat Leaves ▪Create entry for pathogens

  4. Harmful Insects ▪Destroy Plants ▪Eat Seeds ▪Eat Leaves ▪Create entry for pathogens ▪Contaminate Stored Grain

  5. Harmful Insects ▪Destroy Plants ▪Eat Seeds ▪Eat Leaves ▪Create entry for pathogens ▪Contaminate Stored Grain ▪Destroy Houses ▪Spread Diseases

  6. Harmful Insects ▪Poisonous to People ▪Pests to Animals ▪General Annoyance

  7. Insect Classification (And their cousins) ▪Kingdom = Animal ▪Phylum = Arthoropoda ▪Invertabrates - no backbone ▪exoskeleton - “outside” skeleton ▪jointed legs

  8. Insect Classification (And their cousins) ▪Classes = ▪Insecta ▪three body parts head, thorax, and abdomen

  9. Insect Classification (And their cousins) ▪Diplopoda ▪2 pair of legs per segment ▪Millipedes ▪Chilopoda ▪1 pair of legs per segment ▪Centipedes

  10. INSECT ORDERS

  11. Lepidoptera – Butterflies and Moths Coleoptera – Beetles Hemiptera – True Bugs (scutellum) Hymenoptera – Bees and Wasps Orthoptera – Crickets and Grasshoppers Most Common Insect Orders(meaning you have to know them)

  12. Mouth Parts What does the damage! ▪Chewing - Grasshopper

  13. Mouth Parts What does the damage! ▪Chewing - Grasshopper ▪Sponging - housefly

  14. Mouth Parts What does the damage! ▪Chewing - Grasshopper ▪Sponging - housefly ▪Piercing/Sucking - fleas, lice, true bugs

  15. Mouth Parts What does the damage! ▪Chewing - Grasshopper ▪Sponging - housefly ▪Piercing/Sucking - fleas, lice, true bugs ▪Sucking - Cicada

  16. Mouth Parts What does the damage! ▪Chewing - Grasshopper ▪Sponging - housefly ▪Piercing/Sucking - fleas, lice, true bugs ▪Sucking - Cicada ▪Lapping - bees and wasps

  17. Mouth Parts What does the damage! • Chewing - Grasshopper • Sponging - housefly • Piercing/Sucking - fleas, lice, true bugs • Sucking - Cicada • Lapping - bees and wasps • Siphoning - butterflies, moths • probiscus

  18. Insect life cycles GRADUAL OR INCOMPLETE ▪Young resembles adults ▪feed on same habitat ▪external wing development

  19. Incomplete Life Cycle

  20. Insect life cycles GRADUAL OR INCOMPLETE ▪Young resembles adults ▪feed on same habitat ▪external wing development ▪NYMPH - young insect ▪METAMORPHOSIS - series of changes

  21. Insect life cycles Complete ▪Egg ▪Larvae ▪Pupae (coccoon) ▪adult

  22. Complete Life Cycle

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