yey, I found loads of these recently in my worms pot when i was picking out the dead skins. They are the metamorphis stage from worm to bug (like a caterpillar does to a butterfly) I put my larve/pulps/grubs all together in a seperate tub with soft sawdust and oats. I'm interested to see if I can sucessfully raise them into beetles!
Admitetly they are very creepy things! They are completely inactive until you use a tweezer to pick them up, then they twitch like mad! Also, check out the pulps face... the Alien films spring to mind! lol!!