white knot on abdomen

[US Arachnids]

I recieved two A. avicularia. One 3" female and a MM Male.
The mature male that I recieved has a white knot on the bottom of his abodmen. I have seen a little information in the past about this kind of stuff but couldnt really pull anything up in the search engine and im not quite sure exacly what it is. he seems healthy though

please let me know if anyone has any info.
thanks guys,

 

[KnightinGale]

Any chance of posting a pic or two?

 

[WARPIG]

Shouldn't matter now, he's a MM. Won't live too much longer or will die in the molt or shortly thereafter.


PIG-

 

[hassman789]

I agree with PIG. But pics would be interesting.