Entomology – Symptoms
Chewing <ul><li>Chew off external parts of a plant </li></ul><ul><li>Grind them up </li></ul><ul><li>Swallow solids and li...
Chewing <ul><li>Cabbageworms </li></ul><ul><li>Armyworms </li></ul><ul><li>Grasshoppers </li></ul><ul><li>Colorado potato ...
Cabbageworm   Artogeia rapae                                   
Army Cutworm Euxoa auxiliaris
Clearwing Grasshopper
Pear Slug  Caliroa crasei
Piercing-Sucking <ul><li>Piercing the epidermis and sucking out the sap from the cells within </li></ul><ul><li>Internal a...
Piercing-Sucking <ul><li>Have an extremely slender and sharp pointed portion of the beak </li></ul><ul><li>Thrust into the...
Piercing –Sucking effect <ul><li>Minute spotting or white, brown or red </li></ul><ul><ul><li>Leaves </li></ul></ul><ul><u...
Piercing - Sucking <ul><li>Aphids, </li></ul><ul><li>Scale insects </li></ul><ul><li>Leafhoppers </li></ul><ul><li>Squash ...
Aphids
Aphid Curling & Distortion                                                                                                ...
Aphids on Geranium
Brown Scale & Honeydew Coccus hesperidum
Leafhopper
Potato leafhopper damage
Squash Bug
Internal Feeders <ul><li>Feed within the plant tissues a part of all of their destructive stages </li></ul><ul><li>Gain en...
Internal Feeders <ul><li>Borers </li></ul><ul><li>Worms </li></ul><ul><li>Leaf miners </li></ul><ul><li>Gall insects </li>...
Ash Borer
Leaf Miners <ul><li>Small enough to feed between the upper and lower epidermis of a leaf </li></ul>
Gall insects <ul><li>Sting the plant which then grows a home for them </li></ul><ul><li>Insects find shelter and food insi...
Cooley Spruce Gall
Chokecherry Midge in Gall
Subterranean Insects <ul><li>Attack roots and underground stems </li></ul>
Subterranean Insects <ul><li>Chewers </li></ul><ul><li>Sap Suckers </li></ul><ul><li>Root borers </li></ul><ul><li>Gall in...
Laying eggs <ul><li>Puncture tissue as a place to lay eggs </li></ul><ul><li>Cicada places eggs in 1 year twigs – splittin...
Use of Plants for Making Nest <ul><li>Leaf-cutter bees </li></ul><ul><ul><li>Take a semicircular piece of rose and other f...
 
Carry other insects to the plant and establishing them there
Insects Vector Pathogens <ul><li>Feed, lay eggs, or bore into plants Making an entrance point for disease </li></ul><ul><l...
Insects Vector Pathogens <ul><li>Pathogens can spend time in the bodies of insects, can overwinter their </li></ul><ul><li...
Vectored Pathogens Aphids Cucumber Mosaic (virus) Beet Leafhopper Tomato Curly Top (virus) Pollinating Insects Fireblight ...
 
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5 Entomology Symptoms

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5 Entomology Symptoms

  1. 1. Entomology – Symptoms
  2. 2. Chewing <ul><li>Chew off external parts of a plant </li></ul><ul><li>Grind them up </li></ul><ul><li>Swallow solids and liquid parts together </li></ul><ul><li>Grazing </li></ul>
  3. 3. Chewing <ul><li>Cabbageworms </li></ul><ul><li>Armyworms </li></ul><ul><li>Grasshoppers </li></ul><ul><li>Colorado potato beetle </li></ul><ul><li>Pear slug (sawfly) </li></ul><ul><li>cankerworm </li></ul>Pear Sawfly
  4. 4. Cabbageworm Artogeia rapae                                   
  5. 5. Army Cutworm Euxoa auxiliaris
  6. 6. Clearwing Grasshopper
  7. 7. Pear Slug Caliroa crasei
  8. 8. Piercing-Sucking <ul><li>Piercing the epidermis and sucking out the sap from the cells within </li></ul><ul><li>Internal and liquid portions of the plant are swallowed </li></ul><ul><li>Insects remains on the plant </li></ul>
  9. 9. Piercing-Sucking <ul><li>Have an extremely slender and sharp pointed portion of the beak </li></ul><ul><li>Thrust into the plant </li></ul><ul><li>Sap is sucked </li></ul>
  10. 10. Piercing –Sucking effect <ul><li>Minute spotting or white, brown or red </li></ul><ul><ul><li>Leaves </li></ul></ul><ul><ul><li>Fruit </li></ul></ul><ul><ul><li>Twigs </li></ul></ul><ul><li>Curling of the leaves </li></ul><ul><li>Deformed fruit </li></ul><ul><li>Wilting, browning and dying </li></ul>
  11. 11. Piercing - Sucking <ul><li>Aphids, </li></ul><ul><li>Scale insects </li></ul><ul><li>Leafhoppers </li></ul><ul><li>Squash bug </li></ul><ul><li>Plant bug </li></ul>
  12. 12. Aphids
  13. 13. Aphid Curling & Distortion                                                                                                             
  14. 14. Aphids on Geranium
  15. 15. Brown Scale & Honeydew Coccus hesperidum
  16. 16. Leafhopper
  17. 17. Potato leafhopper damage
  18. 18. Squash Bug
  19. 19. Internal Feeders <ul><li>Feed within the plant tissues a part of all of their destructive stages </li></ul><ul><li>Gain entrance by having eggs deposited into the tissues </li></ul><ul><li>Eating their way in once the eggs hatch </li></ul><ul><li>Hole is very minute (invisable) </li></ul><ul><li>Large hole indicates the exit of the insect </li></ul>
  20. 20. Internal Feeders <ul><li>Borers </li></ul><ul><li>Worms </li></ul><ul><li>Leaf miners </li></ul><ul><li>Gall insects </li></ul>
  21. 21. Ash Borer
  22. 22. Leaf Miners <ul><li>Small enough to feed between the upper and lower epidermis of a leaf </li></ul>
  23. 23. Gall insects <ul><li>Sting the plant which then grows a home for them </li></ul><ul><li>Insects find shelter and food inside the gall </li></ul><ul><li>Development from the secretions of the larvae </li></ul><ul><li>Different insects on same plant make different structured galls </li></ul>
  24. 24. Cooley Spruce Gall
  25. 25. Chokecherry Midge in Gall
  26. 26. Subterranean Insects <ul><li>Attack roots and underground stems </li></ul>
  27. 27. Subterranean Insects <ul><li>Chewers </li></ul><ul><li>Sap Suckers </li></ul><ul><li>Root borers </li></ul><ul><li>Gall insects </li></ul><ul><li>Woolly apple aphid </li></ul><ul><li>Wireworms </li></ul><ul><li>Root maggots </li></ul><ul><li>Billbugs </li></ul>
  28. 28. Laying eggs <ul><li>Puncture tissue as a place to lay eggs </li></ul><ul><li>Cicada places eggs in 1 year twigs – splitting the wood </li></ul>Buffalo Tree Hopper
  29. 29. Use of Plants for Making Nest <ul><li>Leaf-cutter bees </li></ul><ul><ul><li>Take a semicircular piece of rose and other foliage </li></ul></ul><ul><ul><li>Cemented together to form thimble-shaped cells </li></ul></ul><ul><ul><li>In a tunnel made in the stem of a plant </li></ul></ul>
  30. 31. Carry other insects to the plant and establishing them there
  31. 32. Insects Vector Pathogens <ul><li>Feed, lay eggs, or bore into plants Making an entrance point for disease </li></ul><ul><li>Move pathogen on their bodies from one plant to a susceptible surface of another plant </li></ul><ul><li>Carry pathogens on the outside or inside of their bodies and inject them as they feed </li></ul>
  32. 33. Insects Vector Pathogens <ul><li>Pathogens can spend time in the bodies of insects, can overwinter their </li></ul><ul><li>Insects act as a host for a pathogen </li></ul>
  33. 34. Vectored Pathogens Aphids Cucumber Mosaic (virus) Beet Leafhopper Tomato Curly Top (virus) Pollinating Insects Fireblight (Bacteria) Small Beetle Dutch Elm Disease (fungus)

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