Larvae
The larva of the centaurus beetle has a dark row of spots which is visible along the side of its body, known as the spiracles. These are openings leading to its tracheal network, which is the insect equivalent of the vertebrate lung. The spiracles could be considered as the insect version of nostrils. Spiracles are also present in the adult beetle and located along the sides of the abdomen; however, they have no distinct color and quite unnoticeable.
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