Surprise worms!

I was picking out the beetles from the pupae box today, and saw a half-grown worm.  At first, I thought I must have had him stuck to my hand for him to get in the wrong place, but then I found several more.   I started stirring the bedding and found a couple dozen small worms.  I try and take the beetles out every day or two, but sometimes some get lost in the bedding.  I guess some were there long enough to mate and lay eggs, and now, I'm finding their offspring!  These worms haven't had any moisture.  I don't put fruit in this box, since the pupae are just dormant while they're in there.  I expect I'll find more there in the future.