Last year when digging the garden I disturbed a brown pupa which I kept, thinking it a moth or beetle. Unfortunatly I left the lid of the jar one day and found the pupa hatched the next day and this sitting on the rim of the jar, so I cant be 100% certain it came from the pupa. this was on 6th june in somerset.
Thankyou very much . I have 'googled' it now, very intereseting. (including one from this site last year..sorry for the repetition). The pupa it may have hatched from was more typically moth like, although a bit of a tight squeeze for so big an insect, so perhaps it had found its way into the house and was just investigating the pupa case!
I was wondering, if it does parasitize moth and butterfly pupa (info from internet) does it always change the pupa shape to the above photo, or is the above pupa formed inside the parasitised pupa?