CHICAGO -- A man suspected in two Northwest Side bank robberies over the last month apparently needed a better disguise.Nine tipsters who saw a surveillance photo posted online identified William Naselli, 51, in the Feb. 28 robbery of a TCF Bank branch in the 4700 block of North Cumberland, the FBI said.He also is suspected in the March 6 holdup of a TCF branch in the 7300 block of West Foster.In a surveillance photo of the Feb. 28 heist, the robber wore cheap black sunglasses, a black hoodie and black gloves.On March 9, an FBI agent called Naselli and he agreed to turn himself in. Naselli admitted to stealing $2,186 on Feb. 28 and $1,640 on March 6, according to the FBI agent's affidavit filed in federal court.Police recovered a demand letter from the Feb. 28 robbery. Naselli allegedly wrote: "Hav Gun, Money in Bag No Dy Paks 20's 50's 100's."Naselli robbed an Arlington Heights bank of $3,067 in 1998. He was sentenced to 46 months in prison in 2003, records show.