Lab Practical 1 Flashcards
Damage symptom category including defoliation, shot holes, margins notched, skeletonization, and etching
Chewing
Larges chunks of leaves are taken out generally by caterpillars
Defoliation
When small caterpillars make random holes throughout the leaves
Shot holes
When bites are taken out of the leaf margins, but no the middle
Margins notched
Feeding occurs all the way through the leaves and just the veins are left behind
Skeletonization
Superficial feeding of the leaves (eats one layer)
Etching
Damage symptom category including stippling, streaking, mining, and yellowing
Discolored
Little dots on leaves; sucks out plant cells in dispersed pattern
Stippling
Sucks out plant cells in lines and dulls color
Streaking
Goes into the leaves and feeds on the cells (Serpentine and Blotched)
Mining
Chlorosis of the leaves
Yellowing
Damage symptom category including leaf cupping, leaf curling, and galling
Distorted
All sides of the leaf curl towards the center
Leaf cupping
2 sides of the leaf curling towards the center
Leaf curling
Injecting the plant with hormones to make the plant make a protective case around the insect’s egg/larva
Gall
Damage symptom category including shoot and branch dieback, girdling, galleries, bark cracking, and borer exit holes
Dieback
Below ground feeding causes this
Girdling
Pulling back the bark and seeing tunnels insects have made - emerald ash borer
Galleries
Frass and sawdust are found; there can be resin to push out the eggs in response
Borer exit holes
Damage symptom category including honeydew, fecal spots, silk, fluffy wax, spittle, etc.
Product
Tent caterpillars leave this behind, making nest-like structure
Silk
Left behind by spittle bugs, it looks like spit on the plants
Spittle
Holes in the trunk of the tree that have material around the edges
Pitch tubes
When sap flows out of tubes to push out the eggs
Sap flow
