4” B. Albiceps sexing
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4” B. Albiceps sexing

Any help is appreciated
Is there clear evidence of this T being male or just an absence of any development that would show it to be female? I’m asking because I had a molt that looked very similar to me from a B. hamorii that turned out to be female and a B. klaasi that now looks similar.
 
Is there clear evidence of this T being male or just an absence of any development that would show it to be female? I’m asking because I had a molt that looked very similar to me from a B. hamorii that turned out to be female and a B. klaasi that now looks similar.
There's not any female parts present, so by process of elimination it's a male. You can also see a shiny area inside the molt kind of shaped like an upside down U right above the slit which would be the epiandrous fusillae (male parts). Females don't just pop out the uterus externus and spermathecae when they get bigger - those reproductive organs are developing from the time they are very small slings, so in the case of the other T's you mentioned above they were there and whoever inspected the molt just missed them (which happens sometimes). This one is a no-doubter, though.
 
There's not any female parts present, so by process of elimination it's a male. You can also see a shiny area inside the molt kind of shaped like an upside down U right above the slit which would be the epiandrous fusillae (male parts). Females don't just pop out the uterus externus and spermathecae when they get bigger - those reproductive organs are developing from the time they are very small slings, so in the case of the other T's you mentioned above they were there and whoever inspected the molt just missed them (which happens sometimes). This one is a no-doubter, though.
Thank you for the explanation! I see what you are talking about. Below is the link to the photo of my B. hamorii molt I mentioned for comparison:
https://arachnoboards.com/gallery/its-not-a-boy.42170/
 

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Spermathecae sexing (Molts)
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