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Georgia 4-H Forestry Field Day Manual
Lonnie E. Varnedoe, Public Service Assistant, The University of Georgia
Kim D. Coder, Professor of Forestry, The University of Georgia
David J. Moorhead, Professor of Forestry, The University of Georgia
The University of Georgia, Extension Forest Resources, Bulletin FOR96-029, 1996, 52 pp.
Contest Events:
4. Insect & Disease Identification
Contestants will
be asked to identify forest insects and disease specimens, or samples of their symptoms or signs. Samples may include bark showing characteristics bark beetle tunnels, pitch tubes, egg masses or other distinctive insect and disease
signs. All specimens will come from the Official List of Insects and Diseases for Juniors OR Seniors as appropriate. The list has 10 forest diseases and 15 forest insects. The Senior list includes those on the Junior list plus
additional species for a total of 21 diseases and 30 insects.
For the contest, approximately five insects and five diseases will be selected from the official list. As with tree identification, judging is based on accuracy of
identification and correct spelling of complete common names. Incomplete or misspelled, but identifiable common names will receive partial credit.
The following insect and disease list is to be used for the 4-H Forestry Field
Day Contests. It is arranged alphabetically by common names. Only the common names listed below are accepted in the contest. Capitalization of common names is not required.
Official List of Insects and Diseases for Juniors
Diseases
| Common Name |
Scientific Name |
| 1. Black knot on cherry |
Apiosportina morbosa |
| 2. Sooty mold |
Capnodiaceae and Dothideales |
| 3. Pine needle rust |
Coleoswrium spp. |
| 4. Fusiform rust |
Cronartium fusiforme |
| 5. Cedar-apple rust |
Gymnosporangium jniperi-virginianae |
| 6. Annosus root rot |
Heterobasidion annosum inianae |
| 7. Hypoxylon canker |
Hypoxylon ssp. |
| 8. Nectria canker |
Nectria, galligena or magnolia |
| 9. Mistletoe |
Phoradendron ssp. |
| 10. Witches broom |
Various agents |
Insects
| Common Name |
Scientific Name |
| 1. Insect Gall |
Hymenoptera: Cynipidae (cynipid wasp) |
| 2. Southern pine beetle |
Dendroctonus fontalis |
| 3. Black turpentine beetle |
Dendroctonus terebrans |
| 4. Aphid |
Homptera: aphididae |
| 5. Pales weevil |
Hylobius pales |
| 6. Conifer sawfly |
Hymenoptera: Diprionidae |
| 7. Fall webworm |
Hyphantria cunea |
| 8. Ips engraver beetle |
Ips spp. |
| 9. Bagworm |
Lepidoptera: Psychidae |
| 10. Gypsy moth |
Lymantria dispar |
| 11. Periodic cicada |
Magicicada septendecim |
| 12. Eastern tent caterpillar |
Malacosoma americanum |
| 13. Locust borer |
Megacyllene robiniae |
| 14. Nantucket pine tip moth |
Rhyacionia frustrana |
| 15. Pine webworm |
Tetralopha robustella |
Official List of Insects and Diseases for Seniors
Diseases
| Common Name |
Scientific Name |
| 1. Annosus root rot |
Heterobasidion annosum |
| 2. Artist conk |
Fomes applanatus |
| 3. Black knot on cherry |
Apiosportina morbosa |
| 4. Brown spot |
Scirrhia acicola |
| 5. Cedar-apple rust |
Gymnosporangium juniperi-virginianae |
| 6. Chestnut blight |
Endothia parasitica |
| 7. Dutch elm disease |
Ceratocystis ulmi |
| 8. Fusiform rust |
Cronartium fusiforme |
| 9. Hypoxylon cankers |
Hypoxylon spp. |
| 10. Mistletoe |
Phoradendron spp. |
| 11. Nectria canker |
Nectria galligena or magnoliae |
| 12. Needle cast |
Hypoderma and Lophodermium |
| 13. Oak wilt |
Ceratocystia fagacearum |
| 14. Pine needle rust |
Coleosporium spp. |
| 15. Powdery mildew |
Microsphaera spp. and Phyllactinia spp. |
| 16. Red heart |
Fomes pini |
| 17. Shoe-string root rot |
Armillariellia mellea |
| 18. Sooty mold |
Capnodiaceae and Dothideales |
| 19. Verticillium wilt |
Verticillium albo-atrum |
| 20. White pine blister rust |
Cronartium ribicola |
| 21. Witches broom |
Various agents |
Insects
| Common Name |
Scientific Name |
| 1. Aphids |
Homptera: Aphididae |
| 2. Bagworm |
Lepidoptera: Psychidae |
| 3. Bark lice |
Psocoptera: Psocidae spp. |
| 4. Black turpentine beetle |
Dendroctonus terebrans |
| 5. Bronze birch borer |
Agrilus anxius |
| 6. Conifer sawflies |
Hymenoptera: Diprionidae |
| 7. Eastern tent caterpillar |
Malacosoma americanum |
| 8. Fall webworm |
Hyphantria cunea |
| 9. Gypsy moth |
Lymantria dispar |
| 10. Insect Gall |
Hymenoptera: Cynipidae (Cynidid wasps) |
| 11. Ips engraver beetles |
Ips spp. |
| 12. Leaf cutting ant |
Atta texana |
| 13. Locust borer |
Megacyllene robiniae |
| 14. Locust leafminer |
Odontota dorsalis |
| 15. Nantucket pine tip moth |
Rhyacionia frustrana |
| 16. Orange-striped oakworm |
Anisota senatoria |
| 17. Pales weevil |
Hylobius pales |
| 18. Periodic cicada |
Magicicada septendecim |
| 19. Pine webworm |
Tetralopha robustella |
| 20. Scales |
Lecanium & Pulvinaria spp.,
Melanaspis obscura and others |
| 21. Scarlet oak / slug oak sawfly |
Caliroa spp. |
| 22. Southern pine beetle |
Dendroctonus frontalis |
| 23. Sycamore lace bug |
Corythucha spp. |
| 24. Tussock moths |
Lepidoptera: Lymantriidae |
| 25. Twig girdler |
Oncideres cingulata |
| 26. Two-lined chestnut borer |
Agrilus bilineatus |
| 27. Variable oakleaf caterpillar |
Heterocampa manteo |
| 28. Walkingstick |
Diapheromera femorata |
| 29. White oak borer |
Goes tigrinus |
| 30. White pine weevil |
Pissodes strobi |
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