PEST

NAME
Eucalyptus lerp
Cardiaspina species

ORDER
Hemiptera

Description of the Pest
The fleshy adult is up to 0.3mm long and covered in a patterned waxy material. The larvae have piercing and sucking mouthparts.

Period of Activity and Distribution of the Pest
Plants are attacked during the warmer months and the favourable conditions are unclear, but some years the pest is in plague proportions. It is commonly found in tropical to warm temperate climates.The fallen leaves are sticky and attaching to people and animals transferring the pest to other sites. It is found from tropical to temperate climates.

Life Cycle
These insects have a Hemimetabolouslife cycle, ie. When the immature nymphsresemble the adults.

          

Damage Caused
The leaves are damaged on both sides develop yellow patches and fall prematurely as the nymphs and adults feed. If a tree has a heavy infestation it may completely defoliated and can lead to the death of the plant.

Susceptible Plants
All Eucalyptusspecies and is a major problem for many species particularly E. grandis, E. botryoides, E. robusta, E. camaldulensis and E. tereticornis.

Cultural Control
There is no effective cultural control, affected trees should be fertilised and watered to maintain vigour.

BiologicalControl
The syrphid fly (hover fly) is predatory and may reduce the infestation.



Chemical Control
It is difficult to control and contact chemicals have limited effect. Under heavy infestations tree injection may be warranted. A sleeve must be used to control the oozing latex.
Note
Always read the label for registration details and direction of use prior to application of any chemicals.