Cockroaches: Common or Controversial

Cockroaches: Common or Controversial?  By Dr. Stuart Mitchell Traced back over 200 million years through the fossil record, cockroaches are primitive, but their diversity is almost unrivaled. Globally, over 4,000 species of cockroaches exist. Pest pressures are represented by about 50 species. Pestiferous species originate from tropical countries. Resulting from international travel and trade importation,…