There's really nothing in western MA. The closest is White Plains, NY, which is not that much of a drive. The next one is 4/19. (If you're the person who just asked this on W. MA craigslist, I already sent you an email). You may also want to check out the New England Reptile Assoc.
(http://www.neraforum.com/index.php?sid=fc8015165b3e4414855172cc330b1bf7)
which operates out of W. MA and E. NY.