Great for taming reapers on gen 2. Simply craft a trap (5x5, 15 walls high). Then grab your reaper queen. Take it and drop it into the trap. Get a light pet with high emission range and attack with your rhyniognatha. Use H-L-N-A to see it's hp. If it gets too low drop a parasaur in to feed it. Apart from that it's your average reaper tame