Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Sweetpotato tortoise beetle (054)

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  • Widespread distribution. Asia and Oceania. On sweetpotato and others in morning glory family.
  • Eggs laid singly on leaves; larvae with 'anal fork' of previous skins and faeces; pupate on leaves; adults (5 mm) round, golden, with broad wing margins.
  • Holes made in leaves as beetles feed. Effect on root yield is unknown, but unlikely to be high.
  • Natural enemies: parasitic wasp and predators.
  • Cultural control: do not plant new crops next to old; apply mulches, manures, fertilizers, water for rapid early growth; weed; collect/burn trash after harvest.
  • Chemical control: PDPs: ash (or ash plus lime in water), derris, pyrethrum, or chilli; or synthetic pyrethroids, but likely to kill natural enemies.
Common Name

Sweetpotato tortoise beetle

Scientific Name

Cassida and Aspidimorpha species.

AUTHORS Helen Tsatsia & Grahame Jackson
Information from Chris Reid (pers. comm.), Australian Museum, Sydney; and from Tortoise and spotted cucumber beetles on sweet potato (2012) ONspecialitycrops. ( Photo 2 Graham Teakle, Canberra. Photo 6 Mani Mua, SPC, Sigatoka, Fiji.

Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.

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