6 hours ago
The marks on the parchment aren’t directly related to feeding.
The worm spends about four years inside the wood. It then has to find a way out before it pupates into a beetle. Without a way out, it’s trapped, as it can no longer eat its way through the wood once it’s a beetle.
Tree bark is softer than wood – and parchment is softer than wood. The worm therefore eats its way towards the softer side, as that is where the exit should be.
Is that clear?
I once wrote a paper on the subject.
Wurm im VM_en.pdf (Size: 329.98 KB / Downloads: 2)
Translated with DeepL.com (free version)
The worm spends about four years inside the wood. It then has to find a way out before it pupates into a beetle. Without a way out, it’s trapped, as it can no longer eat its way through the wood once it’s a beetle.
Tree bark is softer than wood – and parchment is softer than wood. The worm therefore eats its way towards the softer side, as that is where the exit should be.
Is that clear?
I once wrote a paper on the subject.
Wurm im VM_en.pdf (Size: 329.98 KB / Downloads: 2)
Translated with DeepL.com (free version)
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