Crab ID?

[jstlsn]

Yesterday I found a small white hairy crab on my live rock. It is about 1 inch wide. At first I thought it was a gorilla crab. However, after looking a pictures of gorilla crabs, I am having second thoughts. It appears to have 2 large legs in the back and 2 large claws in the front. I don't see any more legs. It does not have 8 defined legs like the picture I have seen. I have a blurry picture I can post when I get home.

On a side note, he is now in my refugium and it appears that one of his legs has fallen off. He is moving around. Before bed he was in the front of the refugium and this morning he is in the back.

Thanks
Brad

 

[dc]

Even with pictures it's pretty hard to id a crab. Gorilla is pretty much a generic name for a hairy crab. Maybe he's molting? They generally regenerate their legs in a molt. I'd be checking the tank at night for a possible reason it lost those limbs myself. Maybe a larger crab.