When you’re going spelunking, bring a Carno or something around those lines. They hold up fairly well against the arthro and so far i have not lost a single piece of my armor while fighting on my tame. (Don’t forget stimberries)
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.