Life Cycle of a Bess Beetle

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(The life cycle is called metamorphosis because the beetle completely changes form.)

  1. A Bess Beetle (passalidae) starts out as an egg and travels in the parents' mandibles (jaws).
  2. The egg hatches and a larva (grub) emerges.  The larva looks like a worm.  The parents feed it by chewing wood and regurgitating it.
  3. The larva eats and grows, then enters the pupa stage (resting stage). When the adult beetle comes out, it is a reddish color. They live over two months.
  4. The male and the female mate and new generation of Bess Beetle is born, or the beetle dies.

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1.Egg
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2. Larva
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3.Pupa
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4.Adult just emerged
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5.Fully formed adult