Pacific Pests, Pathogens, Weeds & Pesticides - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Galip (Canarium) weevil (537)


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Summary

  • Narrow distribution; reported only from Papua New Guinea mainland and islands. Weevil of the snout family, only recorded on galip (Canarium).
  • Major economic importance in smallholder plots and galip plantations (up to 90% trees dead/dying in parts of Gazelle Peninsular). Larvae tunnel into trunks (<10 year-old trees, 80 cm diameter) below first branches, causing canopy loss, dead branches, holes with weeping resin drying white.  
  • Larvae, creamy-white, brown head, black mandibles; adults, 2-3 cm, long snouts, light brown/white banding on legs, white cross on folded wings. 
  • Spread: walking, possibly other ways.
  • Biosecurity: regulations needed based on better understanding of life history.
  • Natural enemies: unknown; yellow crazy and green weaver ants suggested as possibility.
  • Cultural control: handpick weevils, use wires to kill larvae in tunnels, avoid stressing trees (i.e., cutting bark or burning trash on trunks). No evidence of resistant varieties.
  • Chemical control: test using synthetic pyrethroids poured into tunnels 

Common Name

Galip weevil. Galip is the Pidgin name in Papua New Guinea for Cararium species. It is also the name of the edible nut. The tree is a natural member of lowland rainforests of Melanesia (Papua New Guinea, Solomon Islands and Vanuatu) and is also native in eastern Indonesia, up to about 500 masl. The tree is valued for its nuts - for food and oil - as well as its timber.

Scientific Name

Ectatorhinus magicus. It belongs to the snout (or true) family of weevils, the Curculionidae.


AUTHOR Grahame Jackson
Information (and Photos 1-3) from Galip weevil of Papua New Guinea. Fact Sheet. ACIAR, NARI, UNSW, Australian Museum; and (plus Photos 4&5) from Cassis G, et al. (2017) Life history, identity and damage assessment of galip weevil. Final Report. ACIAR, Canberra. 63pp.

Produced with support from the Australian Centre for International Agricultural Research under project HORT/2016/185: Responding to emerging pest and disease threats to horticulture in the Pacific islands, implemented by the University of Queensland and the Secretariat of the Pacific Community.

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