Hello Guys "G.pulchripes".

[Purge252]

Hey Guys My 1inch Sling gone Darker and the spot on his abdomen gone Black What is HE/She Doing?

 

[Martin Oosthuysen]

Hello
Picture might help, but I'd guess pre molt. Shedding its old exo skeleton, for a new one.

 

[Tongue Flicker]

Definitely gone into pre-molt mode. Check to see if she still accepts some food. If not, then prepare for a molt

 

[Sabeth]

It's premolt. As a tarantula approaches a molt, the bristles of the new exoskeleton underneath become pigmented and so the dark color.