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Life cycle of Striped stem borer (SSB), Chilo suppressalis (Walker)

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Life cycle of Striped stem borer (SSB), Chilo suppressalis (Walker)

  • Striped stem borer (SSB), Chilo suppressalis (Walker) has been reported from plains of India, Assam, West Bengal, Bihar, Orissa and Kerala.
  • There is large amount of variation in the adult morphology of this species.
  • In general, the adults are dirty white to yellow-brown, variably sprinkled with grey-brown scales; Hind wing white to yellow brownish.
  • The head and thorax of male are brown and abdomen is pale in colour.
  • Larvae are dull yellow coloured with ochreous head and prothoracic shield.
  • They have 5 distinct stripes (one median, two sub dorsal and two lateral) and 2 distinct sub lateral stripes, on abdomen.
  • No information on biology in India is available.
  • However it has been reported from many temperate regions like Japan and China where it is a major pest.
  • Female moth may lay 100-550 eggs in batches of 50-80.
  • Eggs are naked and scale like, pale to dark yellow, laid in masses formed of overlapping rows on leaf sheaths.
  • The larvae live gregariously during the first three instars.
  • Larval period is 20-48 days over 5-6 larval instars.
File Courtesy: 
Rice stem borers in India- species composition and distribution. Technical Bulletin No. XX,Directorate of Rice Research, Rajendranagar, Hyderabad - 500 030, A.P., India.
Photo Courtesy: 
Dr. Chitra Shanker(DRR)
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