- The green scale is a serious sucking pest of coffee, particularly Arabica.
Symptoms of attack and nature of damage
- Nymphs and adults sucks sap from undersurface of the leaves, green shoots, spikes and berries.
- Upward curling and tender twigs drop
- Honeydew excrete – development of sooty mould fungus
- Heavy loss of the sap causes debility or even death of the plant.
Identification of the pest
- Ants movement
- Nymphs – pale yellow colour
- Adult - flat, oval, light green, blackish spots on dorsum
|
 |
 |
| Green scales on coffee fruits and leaves |
|
