It's a bit small still to tell with the naked eye if this is a male or female. My female molted about a week ago and is 13cm now and under the microscope only can you spot the spermatheca.
Unless you can give us a closer photo of the spermatheca area it's very risky to tell.
Hope this helps.

Hendrijs, are you sure this is a female? Did you see the uterus externus? It should be easy to spot at that size :dry:

I hope so............

This is the wet spermatheca. I only chose the dry photo cause Wynster's excuvium was dry.

@Wynster, I would also say male.

The Spermathacea on Nhandu Chromatus is very small, and does not have nice leafy structures like other T's do, there is a possibility that this one is a female. I say this because a male would have a straight smooth ridge across the anterior book lungs, but this has these two small bumps/structures.

Here is a link to another arachnoboards post with a female exuvium and you can see how small the spermathacea structures are.

www.arachnoboards.com/ab/gallery/showimage.php?i=7322

I say young Female.

HS