Caterpillar of Bougainvillea

Disease Information


Symptomsand damage

The bougainvillea looper is a green or brown caterpillar that is roughly 1" long. It is also known as the inchworm or measuring worm. The looperlarva mimics stems and branches very well and feeds primarily at night, which is why you may see the damage but fail to find the culprit on the plant.


Bacillus thuringiensis (sold as a variety of products) is effective against the larval stages of the looper. Bt, as it is commonly known, is a bacterial preparation that causes a disease in many kinds of caterpillars but does not harm beneficial insects, birds, man, or other organisms. Loopers stop feeding within hours after feeding on a sprayed leaf and die several days later. Thorough spray coverage of the tree is required for control.

usually requires more than one application. Caterpillars must ingest the pesticide to be killed.

Examples of Insecticides (AcephateCyfluthrin – Imidacloprid- Insecticidal Soap )


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