Not that hard to tame all you need is bug repellent and what your taming it with and you use the bug repellent and just go feed it I tamed mine on rag and it was very easy just had to kill the others from far range with a fabricated sniper
Easiest and safest way to tame this is to lure it under water. They stop aggro and you can tame as you please. Just make sure you come up for air every once in a while. Also be sure the water is deep enough.
Equip good ghillie equipment, use some bug repellant, this will make the Arthropluera not sense you easier. Crouch down and slowly walk up behind it. With rotted meat on your last hotbar box, feed it until it’s tamed!