IT services firm Virtusa Corp.in Westboro has appointed Rowland Moriarty to its board of directors. The addition of Moriarty brings the total number of directors at the privately-held company to eight. Moriarty is the chairman of Charles River Associated Int., chairman of the board at Wright Express Corp., and a director at both Trammel Crow Co. and Staples Inc. in Framingham. Staples was among the companies looked at in the WBJ’s July 24 cover story on corporate governance.