EMERGENCE Hatching pupae is pretty straight forward.
Temperature should be warm but not roasting.
Normal central heating should be adequate unless the species requires extra warmth (North African species).
Simply lay out the pupae on damp peat to help them with a foothold during emergence.
Some breeders slightly bury the abdomen end of the pupae to give more leverage for the emerging moth or lay moss on top of the pupae for added securing.
Lightly spray the pupae twice daily, but do not saturate as mould could form inside and kill the pupae.
If you are nearing autumn and it is unlikely you will be able to raise a second brood then the adults can be used as "SET" specimens, or the pupae can be put into winter hibernation and brought out in spring for hatching.
This hibernation period is called diapause.
Hibernating pupae can be laid in plastic boxes with cotton wool for padding and housed in the refrigerator.
An outside garage or shed is also fine so long as the temperature stays low (but not freezing!) In some species diapause is light induced/broken while in others it is temperature/humidity that breaks the ‘’sleep’’ and starts the process of hatching off.