COCKROACHES HISTORY

Most ancient of all species of pests

Originated 250 -300 million years ago

  • They succeed in surviving by adapting too constantly changing conditions
  • Every part of the world
  • Most species occur in tropical or sub-tropical areas
  • Feed on Soft and Solid materials eg. cake, bread, wallpaper, leather and packaging materials

CHARACTERISTIC FEATURES

  • Very flat body
  • Long whip like antennae
  • Prothorax
  • 2 pair of wings
  • 3 pair of slender legs
  • Cerci

THREE COCKROACH SPECIES OF MAJOR IMPORTANCE

  • German cockroach (Blattella germanica)
  • American cockroach (Periplaneta americana)
  • Oriental cockroach (Blatta orientalis)

GERMAN COCKROACH

 Most important and best known

  • 10-15 mm long
  • One of the smallest members of its genus
  • Yellowish brown
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