* Cuomo subpoenas Thain, Bank of America's Alphin

* Cuomo also probes Bank of America disclosures-source

* Bank of America shares rise 8 percent (Recasts first paragraph; adds Thain and Lewis bonuses, lawsuits, details on Merrill losses)

By Martha Graybow and Jonathan Stempel

NEW YORK, Jan 27 (Reuters) - New York's attorney general has subpoenaed former Merrill Lynch & Co Chief Executive John Thain to testify about bonuses paid to Merrill executives a few days before the brokerage's takeover by Bank of America Corp.

Andrew Cuomo, the attorney general, is also examining the timing and adequacy of disclosures by Bank of America (BAC.N: Quote, Profile, Research) about Merrill's mounting losses, a person familiar with the matter said. The person requested anonymity because of a lack of authority to discuss the probe.

Cuomo said he also subpoenaed Bank of America Chief Administrative Officer J. Steele Alphin about the bonuses.

Bank of America spokesman Scott Silvestri declined to comment. The Charlotte, North Carolina bank has said it had "no legal right" to challenge Merrill's bonus payouts. A spokesman who said he represented Thain also declined to comment.

Cuomo's probe adds to pressure on Lewis, who ousted Thain as head of global banking, securities and wealth management on Thursday and is facing calls from some investors, analysts and commentators to resign from the largest U.S. bank by assets.