Here’s how I tamed one. You create a behemoth gated cage with stone door frames for bars and ceilings to box it up (I had to use creative mode to do that). And make sure you add a double door for your pteranodon to go through. Because once you find the bug monster (make sure it’s female), let it chase you and go through the double door to trap the bug. She cannot shoot through the bars, and while she was busy attacking the cage, close the behemoth gate quickly and you trapped her.

Once you have the pheromone (from killing the male) ready, I used it on my woolly rhino (make sure it’s female), and kept shooting the bug with both my primitive and apprentice bow till her health’s at 10%, she impregnated my rhino, and boom (RIP my rhino), baby came out after a while. You claim and imprint the baby and there you go.