Spermathecae sexing;P. metallica

[Talkenlate04]

Hmm I thought it grew together, where the heck did I read that?. Ahh well learned something new. Maybe it was all in my head

EDIT- ok so where did the term fused Spermathecae come from then?

 

[metallica]

even if you don't see the spermathecae yet... you shoud see the uterus externus. and i don't see that in these pics.

 

[Talkenlate04]

uterus externus

So you can see that before the spermathecae are formed even though it is so transparent? If that is the case I have a few molts I am going to go and re check.

 

[metallica]

in some species yes. the M. balfouri can be sexed at very small size!!

 

[Talkenlate04]

Does the uterus externus move at all? Meaning would it separate itself from the rest of the molt at all if I tried to lift it with a toothpick?

 

[Tunedbeat]

even if you don't see the spermathecae yet... you shoud see the uterus externus. and i don't see that in these pics.

Interesting, I've never thought of that. Thanks for the info.

 

[metallica]

if you don't have acces to this:

Hancock, K. & Hancock, J. 1989. Sex determination of immature theraphosid spiders from their cast skins. Manu.

i suggest you read this article:
http://www.arachnoboards.com/ab/showthread.php?t=84086

 

[Austin S.]

if you don't have acces to this:

Hancock, K. & Hancock, J. 1989. Sex determination of immature theraphosid spiders from their cast skins. Manu.

i suggest you read this article:
http://www.arachnoboards.com/ab/showthread.php?t=84086

Oh WOW. i have never came across that article before. Thank you very much for the info. And yes, you did tell me so.

I'll wait for the next molt.

 

[metallica]

at least mature males are blue also LOL

 

[verry_sweet]

if you don't have acces to this:

Hancock, K. & Hancock, J. 1989. Sex determination of immature theraphosid spiders from their cast skins. Manu.

i suggest you read this article:
http://www.arachnoboards.com/ab/showthread.php?t=84086

Very useful. Thank you

 

[Austin S.]

Took some ventral shots for people over on ATS, why not go ahead and put um here also.
With flash

W/O flash

 

[Talkenlate04]

if you don't have acces to this:

Hancock, K. & Hancock, J. 1989. Sex determination of immature theraphosid spiders from their cast skins. Manu.

i suggest you read this article:
http://www.arachnoboards.com/ab/showthread.php?t=84086

Very useful stuff, thank you for posting the link.

 

[billopelma]

Here's a shot from a 4" or so P. met. These are very difficult to see on smaller ones, try a combination of front and back lighting. As far I as I know they do not fuse.

Bill

 

[Truff135]

Wow, I learned more from one article about sexing than from my entire time keeping tarantulas so far. Thanks a lot for that awesome link!!!

 

[Austin S.]

I hope it is okay with Tuned for me to use this, buuut check this shortcut out people.
3rd page
http://atshq.org/forum/showthread.php?t=14469

 

[phormingochilus]

They will fuse at the base, but retain the twin lobes - a unique combination for Poecilotheria ;-)

Regards
Søren

Here's a shot from a 4" or so P. met. These are very difficult to see on smaller ones, try a combination of front and back lighting. As far I as I know they do not fuse.

Bill

 

[Taki F&T]

Just thought I'd show you pics of my female P metallica as well, and just to say that they didn't have that little 'triangle' when looked at ventrally. I think your is a male

I have 4 of them and the 3 are now confirmed females with the 4th one being a bit small to know for sure yet. However, none of the females had that little telltale triangular patch between the booklungs when viewed ventrally. So I'm guessing male for my 4th and yours too

I think that patch is the male epiandrous fusillae as described by Rick West (http://www.birdspiders.com/faq_sex.html/)

 

[Tunedbeat]

Hey, Taki
Can you get ventral shots of the confirmed females and possible male?

 

[desertdweller]

My first and still thought is male.

 

[Taki F&T]

Hey, Taki
Can you get ventral shots of the confirmed females and possible male?

I'll make a plan