Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:12:03.5632273Z
   5
Coconut mealybug (347)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Worldwide distribution. On fruit crops, palm species, and ornamentals. Mealybug of minor importance, except where tended by ants.
  • Damage: (i)  feeding turns plants yellow and weak; (ii) honeydew drips onto foliage and sooty moulds weakens plant growth.
  • Adult (females) up to 2.5 mm long, covered with beige, reddish-brown, yellowish-orange, wax, over reddish-brown to orange body. Wax on top in pyramids, similar to those on margins. Males develop inside cottony cocoons, emerging as tiny fly-like insect with wings, large eyes, legs.
  • Spread by 'crawlers' (nymphs) walking, or carried by wind, vehicles, animals, birds, on clothing, and trade in plants.
  • Natural enemies: ladybird beetles and parasitoid wasp (Pseudaphycus).
  • Cultural control: check nursery plants, prune infestations; add manure or fertilizer to hasten growth; control ants - boiling water, prune low-hanging branches, remove weeds.
  • Chemical control: soap solution, horticultural or white oils (see Fact Sheet no. 56); avoid malathion and synthetic pyrethroids - they will kill natural enemies. Use pyrethroids against ants.

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