Nhandu tripepii 2" DLS image 1/3
I think I can JUST see the outline of their rabbit-ear shaped spermathecae, but they're very lightly coloured and I can't make it out for certain. It doesn't help that the image is blurry, either.
 
Try backlighting it - that's what I did. Backlighting it shows the spermathecae very clearly. I could see the spermathecae in my female and she is the same size.
 
@VanessaS I prefer this method when I sex any small T. It's hard to see on smaller specimens when the spermathecae aren't sclerotized and are pretty much transparent. Also helps to check again after the molt dries.
 
@Arachnophoric Yes, and it also helps for those species who have a very prominent uterus externus that otherwise blocks the transparent spermathecae.
 

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Category
Spermathecae sexing (Molts)
Added by
Mpmackenna
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Device
samsung SM-G930V
Aperture
ƒ/1.7
Focal length
4.2 mm
Exposure time
1/60
ISO
500
Filename
20190611_182456.jpg
File size
4.6 MB
Date taken
Tue, 11 June 2019 6:24 PM
Dimensions
2880px x 2160px

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