>>1 This is very late but I just had the most incredible stroke of luck. I went to a nook miles island and after a long time running around and checking the palm trees I have successfully caught the three rarest and most expensive bugs: the golden stag, the horned Hercules and the giraffe stag. I didn’t know of them closing and opening mandibles as a cue or that they even look at you. It was a lot of trial and error and just carefully controlling how close I get to them. Good luck!

Best way to get them to spawn is a mystery island, I found money rock island the best. Cut down all trees apart from the palm trees, remove all fruit, wood, weeds and flowers etc, but leave the money rocks in the middle. Then basically run in circles around the island checking each palm tree as you pass. You may need to vault into the middle to remove bugs that spawn there, and it will take many runs around but eventually they will spawn. Thank you to below, will try the creep and stop tomorrow.

>>5 Little late, but the trick is that when they start opening and closing their mandibles, you move towards them, and stop when they stop. Occasionally they look back at you and you must not move at all. Beetles are like this where you move when they are climbing up and down the tree.

Every single time. I don’t even get within catching range while I’m sneaking with my net and they fly away. It’s seeming more and more impossible. They just take off before I can even get close and I’m not even running/walking I’m holding A with my net. Wtf

>>3 I’ve been time traveling and still have yet to find this one along with one other tree beetle. They must just be really scarce

>>1 You should be able to use time travel to get it, right?

>>1 That's because they haven't been available yet since the game has been out.

Haven’t found this bug once; found everything else many many multiple times over.