A Queen Arachno.
Arachnos are four-legged spider-like enemies in Xenoblade Chronicles and Xenoblade Chronicles 2. Giant Queens also exist, they are enormous compared to the regular Arachno and have two abdomens instead of one.
Many species of Arachnos are in the Sound Category, meaning they attack if the party leader runs while nearby them. Some species can hatch from Pods.