If you're really lucky the chrysalis will be parasitized and you can show them a scene reminiscent of Alien. Now that would be creepy....... but also rather cool!
@kerristephens@carebear@robv thanksfor all the info- I am the world's worst typist :(( I'll fix those right away. Now I just need to find out how long they incubate....
http://www.whatsthatbug.com/ask-whats-that-bug/
Excellent site, with some great photos sent in...have a look around, it will make your skin crawl!