Assassin bug sexing

[Arthropod Universe]

Got two white spot assassin bugs that were sold as a “breeding pair” can you guys help me double check

 

[Veno Manus]

You got some pictures?

 

[Veno Manus]

From what I know about them the female have a bigger abdomen. The males have smaller.

 

[Arthropod Universe]

Is there any other methods like with the spike things

 

[Arthropod Universe]

I never got a good look at the abdomen