• t_berium@lemmy.world
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    14 days ago

    Not sure, but I think that wasn’t because of higher temperatures but higher levels of oxygen in the atmosphere.

    • Machinist@lemmy.world
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      14 days ago

      Correct! Insects have spiracles that basically passively exchange air. Max size is basically determined by this.

      IIRC, some caterpillars only stop growing and pupate when they run out of a growth hormone.

      I always wondered what would happen if you grew them in a high oxygen tank and supplemented their diet with the hormone.

      Maybe get a Mothman that way.