PEST

NAME
White Stemmed Gum Moth
Chelepteryx collesi

ORDER
Lepidoptera

Description of the Pest
Adults are dull brown moths with obvious zig zag pattens on the wings. Larvae are plump and fleshy caterpillars up to 100mm long, dull red with yellow bands and have tufts hairs on each segment. Pupating larvae form a silken bag that tapers at each end and are armed with protruding irritating hairs.

     

Appearance and Distribution of the Pest
Common throughout eastern Australia from tropical to temperate regions and predominantly on the coast. They are solitary feeders.

Life Cycle
This insect has a Holometabolouslife cycle, ie. When metamorphosisis observed during the pupalstage.
The caterpillars pupate in silken cocoons that may be found some distance from the feeding area, such as under the eves of buildings.

Period of Activity
They are most active during the night; during the day they move to the lower parts of the tree and hide in bark crevices. They are most active during Spring and Autumn.

Damage Caused
Large pieces of leaves are eaten or the leaf is stripped back to the midrib. The caterpillars can defoliate a small tree; they migrate en masse to the next host tree.

Susceptible Plants
Angophoraand Eucalyptusspecies

Cultural Control
The caterpillars may be removed by hand, but take care and wear gloves as it has irritating hairs.

BiologicalControl
Parasites and predators contribute to the control of numbers.

Chemical Control
Spraying has little effect as this is a nomadic caterpillar.
Note
Always read the label for registration details and direction of use prior to application of any chemicals.