Is this a Theraphosa apophysis?

[rosehaired1979]

I know this spider is not a T.stirmi because it has hairs on its patella and I know the T.stirmi doesn't

 

[Arachnoclown]

I wouldn't rule out yours being a young stirmi...they have hair on the patella when they are young. The hairs disappear as they age.

Here's a young Male stirmi with hair on the patella.

Here's the same Male much larger...

I've never had a apophysis...maybe @KezyGLA can help out.

 

[KezyGLA]

I think you have a stirmi

.. certainly not apophysis

 

[Phil]

I am saying stirmi too.

The apothysis tend to keep their pink feet for a long time as well (mine have anyway) as slings "The big 3" are very easy to tell apart (see collage below of some of the slings I had - all small juvie now). With the stirmi and blondi when mature/larger, the only real difference is the hair on the patella with blondi. Apothysis have a darker colour than the stirmi/blondi as well in my experience.

 

[rosehaired1979]

I have a stirmi about the same size and they look nothing a like

 

[KezyGLA]

I have a stirmi about the same size and they look nothing a likeView attachment 37759

They can look different depending on stage of the moult cycle.

And if the one in question is smaller, it could be a matter of just one moult for it to lose the setae on the patella.

I am just making my assumption of it being stirmi as blondi have longer, more dense setae on the patella