Ant Queen?

Meanwhile, Zack charged forward to assault the creature's abdomen. Following the blockage of its jaw. I took a step to the side and jumped on its abdomen. I clenched my fists around my sword. And then I hacked into its abdomen once again.

The Blade is capable of slicing through the air. The Massive Ant notices it and twists its body slightly to utilize its stinger. The stinger, which looked like a needle, collided with the blade. 

"Clang…Clang..." The clatter of metal rang throughout the region.

I took enough of a stride to the side to avoid its belly Gland. Then, I take a step back to launch another attack. Just as I'm about to leave the area. The acidic liquid squirts from the gland in its abdomen.

As soon as I realized this, I moved away from the area. As time passed, just a few rounds of attacks were launched. But it all comes to the same conclusion.