How do I sex triceratops beetles?

[Chuck4th]

I gather there is a difference in the underside of the last segment.

Can anyone provide pictures?

Thanks,

Chuck

 

[Lucanus]

Females have a somewhat V looking segment whereas males have really wide U shaped segment

Male :

female :

 

[Jordan]

The red shapes are just there as an easy way to remember the difference.

 

[Chuck4th]

Thanks!

I have them in a smallish container with only a bit of substrate, but haven't observed any mating behavior.

Now I can at least figure out if it's a possibility.

Any breeding advice?

 

[Chuck4th]

Thanks again!

Looks like a male and two females!

Now, how about breeding tips?

Off to search...