Pacific Pests, Pathogens, Weeds & Pesticides - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Bean pod-sucking bug (018)

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Photo 1. Riptortus nymphs. Note that the nymphs are ant mimics - they have evolved to appear as ants - presumably this makes potential predators cautious about attacking them.

Photo 2. Riptortus adults and nymphs.

Photo 3. Adult Riptorus pod-sucking bug.

Samari

  • Hem spred long staka ples lo wol finis: Hem impoten insek wea save lukim lo olketa bean plants.
  • Lokol Nem: Insek nilam frut blo bean
  • Saentifik  Nem: Riptortus species; tufala types, Riptortus serripes an Riptortus linearis
  • Eggs – Insek leim egg wan bae wan antap lo lifs 
    • Taem eggs hem hatch, smol insek luk olsem smol anis bae kam aot an senisi go lo black brown insek wea saes hem 16 -18mm long.
    • Smol an bik insek usim nila lo mouth fo sakim juice from fruts an kosim olketa fo tane brown, rinkol an dae.

Lokol Kontrol:

  • No plantim niu bean kolsap lo olo plants wea insek stap. Plantim Bixa (lip stick tree) saed lo gaden bean, hem olsem trap plant wea insek save kam lo hem.
  • Pikim insek wetem han lo eli mone, kolektim an bonem left ova plant bihaen havest.

Kemikol Kontrol:

  • Sprei wetim lokol kemikol olsem derris, pyrethrum or chilli; synthetic pyrethroids o malathion.

Lokol nem: Pod-sucking bug

Saentifik nem: Riptortus species

Photo 4. Riptortus adult feeding on the seeds of long bean.

Photo 5. Bean pods shrivel and die when attacked by Riptortus, and losses can be high.

Photo 6. Fruit of Bixa, the lipstick tree. Observations on Malaita, Solomon Islands, suggest that Riptortus is attracted to the seeds of this shrub. If proven, it could be used as a companion plant.

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