Sexing my T. stirmi

[Mr. P]

Any ideas?

 

[Mr. P]

Full size. Click on third picture, best picture.

 

[menavodi]

Looks like a female....

 

[Arachnoclown]

That's a female

 

[Mr. P]

Looks like a female....

That's a female

Thanks, that is what I was seeing but I wanted to verify.

 

[plessey]

No spermathecae, uterus externus or bursa copulatrix visable in any of those pics yet people are saying female?

 

[Whitelightning777]

Mine is a confirmed female & you can see the molt in the second part of the video.

She wasn't hard to verify, unlike many of my others.

 

[AndrewClayton]

Full size. Click on third picture, best picture.

View attachment 40165 View attachment 40166 View attachment 40167

I’d say male on this one theraphosa sp are usually very distinct in sexual anatomy

 

[Casey K.]

Male

 

[Hemolymph]

Kinda see a flap there, or not. I’m kinda late to the party. Do you have a photo of it stretched out more? Better yet a ventral photo will show if it’s male or not.

 

[Mr. P]

Well all I have to say is if it is a male I am going to be highly upset as I purchased a confirmed female from PNW Arachnicds.

 

[AndrewClayton]

Well all I have to say is if it is a male I am going to be highly upset as I purchased a confirmed female from PNW Arachnicds.

Do you still have the moult. If so try soaking the abdomen part and pull it gently over you’re thumb to keep it in place while you use a sewing needle or toothpick or something similar to run over the area where the spermathecae should be if it’s male there will be nothing there it should just slide straight over if it’s female you should see a flap and what looks like alien antenna that’s the spermathecae

 

[Mr. P]

No I don't. I will do a double check on the next molt.

 

[Jess S]

Really sorry but to me it does look male. Girls have quite a pronounced spermatheca that kind of looks like a tongue poking upwards. Though from scrolling above it seems opinion is really divided, so I could be wrong!!

 

[Arachnoclown]

Looks like a flap flipped over the wrong way to me...I may be wrong though. Kinda blurry.

 

[Jess S]

Looks like a flap flipped over the wrong way to me...I may be wrong though. Kinda blurry.View attachment 41132

I didn't think of that. It could be!

 

[Mr. P]

Will do a closer exam on the next molt. He/she eats like a horse so it won't take long.

 

[plessey]

If only there was some sort of guide somewhere that showed and explained the three structures to look for in female moults as well as showing male accessory organs. Perhaps even having a modest selection of spermathecae photos of various species as well. That sort of thing could probably take a lot of the guess work out of these sorts of posts.

 

[Jess S]

If only there was some sort of guide somewhere that showed and explained the three structures to look for in female moults as well as showing male accessory organs. Perhaps even having a modest selection of spermathecae photos of various species as well. That sort of thing could probably take a lot of the guess work out of these sorts of posts.

If only there was something like this:

How to sex your tarantula

The only real accurate way to sex a tarantula is by examining the epigynal area located between the anterior book lungs of the tarantulas shed skin but to do this you must first know what you are looking for. FEMALE ANATOMY This is a picture of the female sex organs located between the...

www.tarantulaforum.com

 

[AndrewClayton]

i Think @Arachnoclown is correct that does look like a spermathecae flipped the other way round