What is the largest species of cockroach?



  1. 0 Votes

    Multiple previous answers; some of them in the link

  2. 0 Votes

    Not all cockroaches are pests. Only 30 out of over 4000 species invade human homes and give us trouble. The American cockroach is the largest common cockroach at about 2 inches long. The heaviest cockroach in the world is the Australian Rhinoceros Cockroach. It is over 3 inches long and weighs 30 grams. The Madagascar Hissing Cockroach is also about 3 inches long.  

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