This is the Austria your ancestor was born in : http://brainworker.ch/Oesterreich/Austria-hungary.png
I suspect your ancestor was born in #6 Galicia.Austria.www.halgal.com
What was religion of you ancestor? Do you have your ancestor's arrival manifest? Was he naturalized citizen? Did he marry in USA? If yes, than his church marriage record should have his place of birth.
Any of the PRYTULAs that arrived NY Ellis Island your ancestor? www.ellisislandrecords.org