Antheraea frithi L1 caterpillars dying

Hiya,

I recently acquired some A. frithi eggs and although most of them hatched from their eggs without any issues, the newly emerged caterpillars have been dying non-stop for no reason. I gave them oak leaves initially but it seemed like they refused to eat them so I tried a few other alternatives like eucalyptus, privet, mulberry, chestnut and rose leaves. I keep them in an airtight plastic container lined with some damp paper towel covering the top. An acquaintance of mine has their siblings and they're doing fine on oak and rose leaves but I live in a much hotter country.

Any ideas as to what could have been the cause?

Cheers

Thanks for the reply. I tried looking for birch and liquidambar as I knew they were host plants for frithi but I sadly couldn't find any! Such a shame.