Those who say it's very dangerous are crazy. Just bring a long neck rifle, one shot or two and boom. The first time I entered the South Cave, I tamed an scorpion and it significantly helped me to take care of the Arhtros and Boas.
Most of the creatures have arrows in their loots, so if u prefer a ballesta to deal with these bad boys, you are not running out of ammo any soon.
DO NOT ENGAGE OR YOU WILL DIE! I was hunting araneos when this thing came out of nowhere and three shot me! All my dimorphs were literally devoured when I came back. It is like centipedes in real life but instead of killing you slowly with poison it kills you with bites quickly. Do not equip anything lower than Chitin or you will get one shot. Make the up arrow green so people can know 🙏🏻