Use bug repellant and a ghillie suit, and croucg-walk behind it to passive tame it.

Using a trap can be a bad idea because if they Argo on you they will attack the trap until it is destroyed. I used bug repellent and it still can Argo but not likely. The strategy that some one else said works better.

Up this for people to see.

Use bug repelant or a trap to tame a mantis

The saddle is really cheap and can be utilised well with a few trancs

The saddle is actually on level 45 in scorched earth.