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Bruchids : Callosobruchus chinensis (Bruchidae:Coleptera)


  • Adult beetle is 3 - 4 mm long, oval shaped chockalate coloured, body is pointed towards front.
  • The adult emerges out of the pupa.
  • The size of the adult beetle depends upon the size of the infested portion of the pulse. 


              Egg                                       Grub                                 Pupa                           Adult

Damaging systems:

  • The adult and grub feed on the grain by making a small hole.
  • Infested stored seed can be recognized by the presence of white eggs on the seed surface and the round exit holes with the 'flap' of seed coat.
  • Kabuli types are particularly susceptible.
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