These wasps are commercially available for release in orchards. Small brown pupal cases of tachinid flies are often found near the larger parasitized amorbia pupal cases. Beneficial parasites play a major role in keeping amorbia populations below economically damaging levels in most California avocado groves. A naturally occurring nuclear polyhedrosis virus can also control larvae but causes epidemics only when larval populations are high. There are no established thresholds for spray control.
Monitor parasites several times to determine if their populations are increasing.
If they are, the amorbia population will decrease. Spraying with malathion, methomyl, or carbaryl often leads to outbreaks of other pests and is not recommended. Effective when used to control early instars of the worm. Do not apply within this many days of harvest. The Regents of the University of California.