Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Mango seed weevil (353)

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  • Widespread distribution: In Oceania, Australia, Fiji, French Polynesia, Guam, New Caledonia, Northern Mariana Islands, Tonga, and Wallis and Futuna. A brown, black or grey seed weevil.
  • Eggs laid into slits on fruit, larvae burrow into flesh to find the seed, and later pupate. Fruits fall and after 2 months adults emerge.
  • Spread occurs inside infested fruit. Survival in leaf litter and under bark or in seed.
  • A damaging 'cosmetic' pest: (i) dark (egg-laying) marks on fruit, i(i) larvae/pupae and frass in seed.
  • Natural enemies: weaver ant, Oecophylla smaragdina.
  • Biosecurity: if weevil not present, use 'area freedom' - See FAO International Standards for Phytosanitary Measures.
  • Cultural control: if weevil present, collect fallen fruit/seeds and destroy; ban fruit entering plantations; remove non-commercial trees or spray with insecticides.
  • Chemical control: when egg-laying sites seen, spray canopy once or twice (October/November), and when adults emerge (February/March). In Australia, chlorpyrifos and methidathion are used. 
Common Name

Mango seed weevil, mango stone weevil, mango weevil

Scientific Name

Sternochetus mangiferae; previously, it was Cryptorhynchus mangiferae.

AUTHOR Grahame Jackson & Mani Mua
Information from 1CABI Sternochetus mangiferae (mango seed weevil) (2017) Crop Protection Compendium. (; and Woodruff RE, et al. (2014) Featured Creatures: Mango seed weevil. UF/IFAS, University of Florida. (; and from DAF (2017) Mango seed weevil. Queensland Government. (; and Chin D et al. (2010) Field guide to pests, beneficials, diseases and disorders of mangoes. Northern Territory Government, Department of Resources, Australia. ( Photo 2 Ken Walker (2005) Sternochetus mangiferae: PaDIL - (

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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