If you see it and are landing on a flying mount land somewhere else that are fast and can jump at you also a lot of times they are with other things like spiders and centipedes so look out for other things if your going to tame.
I don’t know if it’s happened to anyone else but when in the lava wyvern trench on lost island watch out for mantis as well as wyverns because I've had a few jump out at me, sure it’s not the most deadly thing in the world when it’s wild but it can give you a bit of a jump scare when it jumps at you from out of nowhere. (This is more for when your on a mount with decent health and speed like a maewing or a mana)
SE has most mantises but all are usually low levels, ragna has more common high levels and horns are easy to get from worm cave. SE has low lags and more color options during event, ragna has megalags and mana abusers that will mess up taming.