Spermathecae Resource Thread

[viper69]

Great idea. Helpful ONLY when people put the gender!

 

[skippydude]

Great idea. Helpful ONLY when people put the gender!

When I saw "spermathecae thread", I assumed only females would be posted?

 

[viper69]

When I saw "spermathecae thread", I assumed only females would be posted?

As someone who has only done this about 6 times, having 2 genders side by side is the best comparison. However most don't have 2, so it's best to put the gender otherwise honestly, it's so confusing for some (myself included) that I couldn't/can't always tell them apart. Esp in Brachy's where the tissue is fused together.

 

[catfishrod69]

Ceratogyrus meridionalis



Lasiodora parahybana

 

[catfishrod69]

Poecilotheria regalis



Chilobrachys fimbriatus



Pterinochilus chordatus

 

[skippydude]

2" Male Lasiodora difficilis

[video=youtube;rSUK3-bXc8M]https://www.youtube.com/watch?v=rSUK3-bXc8M&feature=player_detailpage[/video]

 

[catfishrod69]

Males dont have spermethecae

2" Male Lasiodora difficilis

 

[succinct]

Males dont have spermethecae

I think he was trying to say gonopore. It can look like a spermethecae in some very young tarantulas and can confuse a lot of people in some species.

 

[catfishrod69]

Yep, i was just kidding .

I think he was trying to say gonopore. It can look like a spermethecae in some very young tarantulas and can confuse a lot of people in some species.

 

[edgeofthefreak]

3½" Female Brachypelma albopilosum

Full exuvia:


Close-up of spermathecae:

 

[Spidergrrl]

Grammostola pulchripes

Cheers,

Spidergrrl (Paula)

 

[MrsHaas]

I've heard it's best to sex the molts, prob a stupid question, but doesn't anyone swear to either method?



--J.Haas

 

[z32upgrader]

I've heard it's best to sex the molts, prob a stupid question, but doesn't anyone swear to either method?



--J.Haas

For some people, It's the only sure way. I send my molts off to be professionally sexed (for free)by a man with a microscope. PM me if you'd like the details.
Here are some pictures he sent me of my molts:




P.S. In my post above, #90, I was dead wrong about the chalcodes. He matured a few months later.

 

[MrsHaas]

For some people, It's the only sure way. I send my molts off to be professionally sexed (for free)by a man with a microscope. PM me if you'd like the details.
Here are some pictures he sent me of my molts:
View attachment 130612
View attachment 130613
View attachment 130614

P.S. In my post above, #90, I was dead wrong about the chalcodes. He matured a few months later.

Thank u for such nice advice. I'll keep it in mind... I'd love to do this but I kinda like the surprise of what gender they molt into. I'm obviously not a breeder lol... And I love to keep my molts - so I try to visually sex, tho I kno its not100%



--J.Haas

 

[catfishrod69]

Iridopelma sp. Recife

They are spiraled!

 

[sugarsandz]

Brachypelma smithi confirmed female

 

[Casey K]

A. seemani...

just to throw a wrench into the machine, unidentified male 'thingy's'

male ventral (from exuvium)

T that exuvium came from, yes, it has hooks and gloves...

Female spermathecae

female ventral (from exuvium)

I have dozens more of confirmed sexed ventral pics, just not reduced and photobucketed yet. One of these days...

Bill

Hey Bill, just a quick suggestion for new users, perhaps you can tell us what those two male "thingy's" are? I know to look for a flap and its quite obvious these photos clearly suggest such but to some new person those male thingy's may confuse them (they look a "little" like spermathecae).

 

[Casey K]

For some people, It's the only sure way. I send my molts off to be professionally sexed (for free)by a man with a microscope. PM me if you'd like the details.
Here are some pictures he sent me of my molts:
View attachment 130612
View attachment 130613
View attachment 130614

P.S. In my post above, #90, I was dead wrong about the chalcodes. He matured a few months later.

I would say Aphonopelma are some of the toughest species to sex ventrally. Both the male and the female have those hairs (epiandrous fusillae for males and what appears to be epiandrous fusillae in the female (but impossible). I've had issues sexing juvie & adult Aphonopelma because of such.

 

[Casey K]

I've heard it's best to sex the molts, prob a stupid question, but doesn't anyone swear to either method?



--J.Haas

I swear to ventral but only in Brachy's, lol, do I swear 100%. Females are ummm....well, "blessed", lol.....

 

[MrsHaas]

I swear to ventral but only in Brachy's, lol, do I swear 100%. Females are ummm....well, "blessed", lol.....

Lol, I've seen a few of those... Where it's just like vag of the century!