Vana'diel Bestiary: Desert Spider  

Sporadic! I've gotten three in a row, and one in an hour, it's really inconsistent.

whats drop rate on these for spider webs, i noticed that the lower level dont drop often.

As a party of 35-36 we were fighting these things over in the desert, and they weren't particularly that hard to take down, with one exception. They have a special sickle attack that hit our tank for 540. Since these guys are earth based I would say both Shellra and Barstonra are must haves, otherwise an attack/special attack combination can potentially drop a party member in one hit, as we learned. They also have a nasty poison they which is 8hp/3 seconds.