Both tarantula's are hotties!!! My B. smithi and A. avic are still tiny little things. Neither of mine have any adult color yet - lol. You can not tell by the pic if the molt of the red knee is male or female. If you wanted you could always send me the molt in the mail and I could look at it under a microscope. And the avic pic is unfortunately not that great but from what I can see it is looking male to me. But avic's are a bit harder to sex and it could be shadows from bad lighting or whatever that is making it look male.