Luckily, Zack's assumption turned out to be true, as did Kallisto's answer.
When Zack spread his mental energy to its utmost limits, he could find that the area had about thirteen spiders in the area.
A majority of them were on par with his level, however, one specimen stood out in particular.
It was a tad larger than the other ones, and upon attempting to scan it, he couldn't get any information.
That revelation was quite enticing, but he had made his nose bleed in an attempt to scan such a wide area.
The spiders were spread apart from each other, and were continuing to move away from one another in random directions.
Although Zack could've chosen to take on any ol' creepy crawly, he decided on scoping out the strongest one first.
After about five minutes, his throbbing headache went away, allowing him and his group of NPCs to pursue the novice level Ironclad Aphana.
Unfortunately, it took a fair amount of time to get close to it.