PEST

NAME
Fuller's Rose Weevil
Various Rose Weevil
Species
ORDER
Coleoptera


Description of the Pest
The Fuller`s Rose Weevil(Asynychus cervinus) is greyish-brown and grows to 7mm long and is found in Australia. The female adult has faint white marks on its sides and feeds on leaf margins and flower buds. It lays its eggs under loose bark or in curled dead leaves that have fallen to the ground. The light grey lava is up to 6mm long burrow down feeding on the roots, where they overwinter.



The Fuller`s Rose Weevil(Pantomorus godmani) female adult is greyish-brown, up to 8mm long with diagonal white stripes across its wing covers and feeds on leaves at night. It is found in northern and southern USA. The lava feed on the roots and overwinters under ground.

Distribution of the Pest
Fuller`s Rose Weevil`s are found throughout the world and are distributed by walking to a new host or are transported on infested plants.

Life Cycle
These insects have a Holometabolouslife cycle, ie. When metamorphosisis observed during the pupalstage.
The adult female can live up to three months during which it can lay up to ten groups of thirty eggs and the lava, can remain under ground for up to nine months before emerging as adults.

Period of Activity
The adult is most active from summer to autumn.

Damage Caused
Generally the adults chew leaves, preferring new foliage or flower buds and on mass can cause sever damage to the host. The roots are attacked by the lava and may cause yellowing of the foliage and small plants such as Lycopersiconspecies may be killed.

Susceptible Plants
There are many plants that are attacked by these pests, particularly broad leafed types.

Camellia, Citrus, Dahlia, Gardenia, Passiflora,Prunus, Rosaand Rubusspecies are susceptible to the Fuller`s Rose Weevil (Asynychus cervinus).

Acacia, Begonia, Camellia, Canna,Chrysanthemum,Cissus, Citrus,Dianthus, Diospyros, Dracaena, Fuchsia, Gardenia,Hibiscus, Lilium, Pelargonium,Penstimon, Plumbago, Prunuspersica, Quercus, Rhododendron, Rosa and Vinca, species.
All are susceptible to attack by the Fuller`s Rose Weevil(Pantomorus godmani).

Cultural Control
Small infestations may be removed by hand at the adult stage and fallen leaves or debris should be removed from around the base of the plant. Sticky traps at the base of the plant may inhibit the adult climbing the plant.

Chemical Control
Plants may be sprayed with Carbaryl when the adults are first seen.
Note
Always read the label for registration details and direction of use prior to application of any chemicals.