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The Madagascar hissing lorraine (Gromphadorhina portentosa), also known as the hissing roach or simply hisser, is one of the largest species of cockroach, reaching 2-3 inches at maturity.

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14y ago
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10y ago
  • The heaviest cockroach is the Australian Rhinoceros Cockroach, also known as the Giant Burrowing Cockroach, which ranges from 75mm to 80mm in length. It can weigh up to 30 grams.
  • The cockroach with the biggest wingspan is the Megaloblatta blaberoides, with a wingspan of up to 185 mm.
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12y ago

Hissing Cockroaches can reach 2-4 inches when fully mature.-Wikipedia

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9y ago

Cockroaches can grow up to 2 inches long depending on the type of roach and how long it lives. Cockroaches can live up to two weeks without their head.

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Q: How big can grow a cockroach?
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