None that I know of other then what may be written in that snakes awakening book.

I have wanted to obtain the records from the various exterminators as to when they went to exterminate ants and build a chart factoring in weather and quakes. But alas, I just don't have the time.

Also, since it is known that quakes do occur that don't register on current seismographs, I'm not sure what I would be accomplishing.

But I do know one thing. For 3 weeks prior to Northridge we were inundated with ants that disappeared the day before the quake. And this was in the middle of winter. Also, in another location, the same thing happened prior to Hector.

Since Hector, I haven't heard of anybody being inundated with ants continually over a several week period. Its happened for a shorter period of time though. But then, no big quakes either.