Two suspected graffiti vandals were arrested Monday morning in a pizza shop on Boylston Street, Boston police said. Andrew Vesprini, 27, of Lexington and Issac Lehman, 18, of Arlington were charged with damage to property by graffiti. Police allegedly found black and silver spray paint on a backpack and on one of the men’s hands. Police said graffiti tags were discovered on several light poles near the intersection of Massachusetts Avenue and Boylston Street. Both men pleaded not guilty Monday in Boston Municipal Court and were released on personal recognizance.Sarah N. Mattero can be reached at firstname.lastname@example.org.