Pink Bollworms

  • The pink bollworm (Pectinophora gossypiella), is an insect known for being a pest in cotton farming.
  • The adult is a small, thin, gray moth with fringed wings. The larva is a dull white, eight-legged caterpillar with conspicuous pink banding along its dorsum.
  • The larva reaches one half inch in length.
  • The pink bollworm is native to Asia, but has become an invasive species in most of the world’s cotton-growing regions.
  • It reached the cotton belt in the southern United States by the 1920s.
  • It is a major pest in the cotton fields of the southern California deserts.
  • In parts of India, the pink bollworm is now resistant to first generation transgenic Bt cotton (Bollgard cotton) that expresses a single Bt gene (Cry1Ac).
  • Monsanto has admitted that this variety is ineffective against the pink bollworm pest in parts of Gujarat, India.



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