Ventral Sexing.

[Nada]

the 1st 3 are pretty blurry but It looks like I can see a fisillae(male) however the last pic, looks female. can you get a clearer pic with less flash?

 

[Bast]

Yeah the first three were when I had no clue at all, the last one I had slightly more of a clue....I'll go try again LOL

Ok..here's a new pic. I really suck at taking pictures close up, and really have no clue how to use the macro setting (obviously lol).

 

[Nada]

It's alway hard to sex through glass, but she looks female. That's by no means a guarantee, but I don't see a visable indication of a male.

 

[Bast]

Thanks for taking a look Kenny! We were told she was female from the guy who gave her to us, but he was pretty clueless about everything else I didn't want to take his word on it. I'll get some pics of her moult when it happens...and I'll keep fiddling with my camera and see if I can get any better shots to you. Really hope she is female

 

[Atx13]

the chaco is male, almost 100% sure on that, the... what im assuming is an obt? is a female, pretty sure on that as well. Correct me otherwise

 

[DalilahBlue]

Orange Bitey Thing!!!!

 

[Nada]

the chaco is male, almost 100% sure on that, the... what im assuming is an obt? is a female, pretty sure on that as well. Correct me otherwise

You are right! except that the "OBT" is a King Baboon

 

[harleyqueen]

Probably sounds very unproffesional and silly but i am scared of finding out what sex they are. I just want to enjoy there childhood with them and if anyone matures into a male i will find a breeder with a female and let them go. Probably cry for a few days and then buy some babies to cheer myself up.

 

[john m shires]

Well I finally got some shots of what I believe to be spurs / hooks on my Grammostola Rosea(Chilean Rose Tarantula) That many hairs it is hard to tell and I don’t want to harass him too much since he has only just had his moult . If you look at him on his back preparing him self for the moult there is no hooks. So I feel he has just reached adult? I don’t know? Will he moult again? Just what is the time line for a male Tarantula of his age?

 

[john m shires]

This is how vibrant he looks now after his moult the red really shows now

 

[john m shires]

This is him before when I first got him he was not a sling

 

[Nada]

Yep, those are hooks, and clubs.

 

[john m shires]

thanks kenny

 

[Bast]

Still having an issue figuring this out on live spiders (I understand better on moults...but I don't have one of those yet lol)...so I got some better pictures; anyone care to help?

 

[DalilahBlue]

I am saying female but Kenny is better at this than I...

 

[Nada]

Dude, looks like a lady.

 

[DalilahBlue]

If there is a "Belly Button" it's a male, otherwise it is female...
I don't see such, but there is a glare, so I am not sure...

 

[Bast]

Yay! Thanks guys Can you tell me why exactly? Is it because that one area is raised? I read the article, but still not getting it (I suck lol).

 

[DalilahBlue]

The drawings in this post earlier really helped me. The area on females looks like a "U" and a "n" on males....at least how it looks to me...the males have a dimpled arched area and the females don't.

 

[Nada]

Yay! Thanks guys Can you tell me why exactly? Is it because that one area is raised? I read the article, but still not getting it (I suck lol).

Yes, and no. I can tell you why it looks female, however, ventral sexing is not 100% accurate. So I can't tell you why it IS female.
With a male your looking for a secondaryu set of spinnerets. These are used for making sperm webs. on darker Tarantulas, they make what I call an "Against the grain" pattern. Basically you have a patch of inconsistent hairs,sometimes creating a (very obvious) half circle. the lack of the secondary spinneretts (Epiandrous fusilae) suggests female.