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.
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
