I think, that you will have to take the pupae out of the cocoons to check their sex and it is better to do that after overwintering.
Beiträge von tomas-princ
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Hi, for me it is Attacuses caterpillars, they' re interesting and big too.

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Hi, Philippe, BINGO. You're better than me.
Regards Tomáš.
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Hi, it's some caterpillar from family Acronicta. I think, it is Acronicta psi. Young caterpillar, L1-L2.
Regards Tomáš.
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Hi, that's Carabus granulatus, or Carabus ulrichii.
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Hi, that's Sphinx ligustri ( Ligusterschwärmer ).
Best regards Tomáš Princ
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This caterpillar is a Lasiocampidae caterpillar, but I can't determinate it.
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Hi, it's look like Samia kohli.
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This pupa is female,last year I have the same pupa and me hatched female of laothoe populi
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Diese Raupe ist von Saturnia Pavonia ins L3 stadium,tschus Tomas.
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Diese Raupe ist von Saturnia pavonia.