Took a look at my Brachypelma emilia yesterday and was shocked to find strips of skin torn off her abdomen! I think what happened was that she was about to molt and tried flicking some hairs for some reason. And ended up flicking off some of her skin! At first I panicked a little as there was a couple drops of liquid on the ground near her, making me think she might be bleeding. But it's usually best to leave them alone whenever possible, so I did. For awhile.

Checking in on her later, I saw her carapace had popped off, but she was still upright! She had laid down a mat of webbing and kind of half rolled onto it, but never made it all the way onto her back. I watched her for awhile, seeing if she could do the molt upright. After watching her struggle for awhile, I decided to roll her over myself to make her molt go a little easier. She could probably have managed the molt upright, but I didn't want to take any chances.

Her molt went well, she shed her old skin completely.

She looks good, like a brand new spider. I was watching her clean herself this morning and her fangs are like this weird pink-red colour. I guess it takes awhile for their fangs to completely darken and turn black. In a couple weeks I'll start feeding her again. And I'm sure my male emilia will mature sometime this year, then I can try breeding them. :D

I just realized why she was flicking hairs just before her molt. From here:
Just prior to ecdysis, the tarantula usually spins a sort of cradle to lie in while removing its skin. Species with urticating hair will line this cradle with the irritating barbs to prevent predators from having easy access to the spider during a very weakened moment. This webbing is embedded with urticating hair.
Doh, of course, I forgot all about that.