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Spermathecae Resource Thread

Snipes

Arachnoprince
Old Timer
Joined
Feb 25, 2005
Messages
1,386
I think perhaps the best way to help people learn to sex would be just to show photos of each gender. I will get the ball rolling. This is a female B. smithi.
molt:


Note the flap on the molt. Its the give-away for females. Absense of some sort of flap indicates a male, but remember to look closely! Some are tricky.
ventrally:


1. Males, especially more mature males may have a patch of somewhat thick hairs here.
2. More of a lip (this is where males deposit sperm). Males sometimes appear to have a "hole".
3. In comparison, females have a farther distance between the second book lungs.
4. Males sometimes appear to have a "half circle" patch. It is absent here. Sorry, its asymetrical.
The other two things have no significance, i just couldnt help myself :8o
 
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becca81

Arachnoemperor
Old Timer
Joined
Sep 17, 2004
Messages
3,791
(size indicates the legspan of the exuvium)

A. seemani female - ~5"


B. smithi female - ~3.5"


G. rosea female - ~4"


B. vagans female - ~2.5"
 
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becca81

Arachnoemperor
Old Timer
Joined
Sep 17, 2004
Messages
3,791
(all ventral sexing confirmed by molts)

G. rosea female - ~4.5"


P. murinus female - ~2.5"
 
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becca81

Arachnoemperor
Old Timer
Joined
Sep 17, 2004
Messages
3,791
T. blondi male - ~2.5"


C. crawshayi male - ~2"


(all ventral sexing confirmed by examining the exuvium)

P. regalis male - ~2.5"
 
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becca81

Arachnoemperor
Old Timer
Joined
Sep 17, 2004
Messages
3,791
T. blondi female - ~6.5"
 
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Snipes

Arachnoprince
Old Timer
Joined
Feb 25, 2005
Messages
1,386
thanks for the pics becca. With the females you are looking for the flap on the molt. Look at all the female pics and you will find it on all the molt pics. I still have trouble with ventral shots, but with these shots i hope to get better and learn.
 

becca81

Arachnoemperor
Old Timer
Joined
Sep 17, 2004
Messages
3,791
Smooth - no visible spermathecae or uterus externus


Visible spermathecae (present on most species) and uterus externus
 
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phil

Arachnoknight
Old Timer
Joined
Aug 3, 2002
Messages
154
A few females

Citharischius


Aphonopelma



Brachypelma




Nhandu


Lasiodora


Grammostola
 

Lorgakor

Arachnomom
Staff member
Joined
Sep 9, 2004
Messages
2,368
These pics aren't the greatest, but you can still see the goods.

Female E. pachypus


Male T. blondi


Female H. maculata


Female A. seemani
 

Blasphemy

Arachnobaron
Old Timer
Joined
Mar 7, 2005
Messages
390
Here's a molt from a fasciatus I have at my work...and since I own a female as you can see from my previous post, I'll be buying him for breeding once he matures...
 

Attachments

zLOST

Arachnosquire
Old Timer
Joined
Sep 27, 2004
Messages
101
Sample with Brachypelma sp.

i think, that this is pretty self-explanatory. i've used the males final molt in this setup.
 

Attachments

metzgerzoo

Arachnoangel
Old Timer
Joined
Dec 12, 2003
Messages
984
Well, this is all peachy, however, all of you are forgetting one little MAJOR thing, not all tarantulas are female AND it's just as important for those new to the hobby to also be able to know and detect the epiandrous fusillae as well.
 

billopelma

Arachnolord
Old Timer
Joined
Sep 20, 2005
Messages
604
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
 
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