I can tell you this... if you extract the pupae they are probably not going to do so well... but... if you make a good pupal cell they have SOME chance of survival (for Lucanus or Dorcus makeshift cells work 100% fine though). Use tissue or a type of foam. I'd say tissue, since it is cheap... and I've had no problems... i just don't know if it will do so hot on Rugose.. :/