Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:13:22.2420946Z
   5
Guava bud moth (381)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Restricted. In Oceania, Australia, Fiji, French Polynesia, New Zealand, Northern Mariana Islands, Samoa. Hosts are guavas, Malaya apple - members of Myrtle family.
  • Damage: larvae roll and web shoots and kill them; also eat skin of the fruit; larvae are yellowish below and grey above; head yellowish-brown. Adult, greyish brown forewings with speckling, pale brown fringed hindwings. Serious in guava plantations.
  • Natural enemies: none reported, but wasp parasitoids are likely.
  • Cultural control: use finger and thumb to squash and kill larvae; plant flowering plants inside and around plantations to attract natural enemies.
  • Chemical control: biorational pesticides (i) botanicals (chillies, neem, derris, pyrethrum); (ii) microbials e.g., spinosad, Bt (Bacillus thuringiensis subspecies kurstaki) against young caterpillars; (iii) synthetic insecticides are registered on guava, e.g., malathion (USA), carbaryl, dimethoate (Australia), but are best avoided as they will destroy natural enemies. Spot-spray damaged shoots rather than 'blanket' spray.

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