I was of the impression that Pteria was built on the ruins of Hattusas. How far apart were they?
It's possible that Hattusas was one of the suggested sites; maybe it is nearby, I'll check it out. I think Hattusas is one of several ancient sites, and is located between Hattonesas and Hathreesas. Hut hut hut. ;')
Both are in central Anatolia, but otherwise I'm not sure. A couple of sites:
http://www.andantetravels.co.uk/default.cfm/tour.86
http://www.andantetravels.co.uk/default.cfm/tour.86/psect.2/ba.where.cfm
http://www.metu.edu.tr/home/wwwkerk/index.html