• Are you a Tarantula hobbyist? If so, we invite you to join our community! Once you join you'll be able to post messages, upload pictures of your pets and enclosures and chat with other Tarantula enthusiasts. Sign up today!


New Member
I'm an amateur having trouble sexing this M. Balfouri, it destroys all of it's molts. I have one confirmed female not pictured, they are very similar. However she only webs up her little hut not her entire enclosure like this one does. I was wondering if maybe the webbing attached to the short wall pictured is the remnants of a sperm web? Sorry for the awful pictures, this one refuses to hold still. Any help would be much appreciated!



Well-Known Member
1,000+ Post Club
3 Year Member
Tarantula Club Member
Hiya, there is a lot of flare back from the flash and scratches on the tank which make it very hard to sex. I would say looks male to me.

If a mature male you would see "bulbs" that look a bit like boxing gloves on the palps. Male Balfouri also tend to have a bluer carapace with the females being a lot lighter.

Here is a freshly matured male for comparison and a pairing with him (you can just make out the female underneath has a much lighter carapace)
Screenshot_20200507-132807_Video Player.jpg