Two elk hunters who were found dead in a national forest in Colorado last week died instantly from a lightning strike, a county coroner said on Tuesday morning. The Conejos County coroner, Richard Martin, said on Tuesday that the two hunters, Andrew Porter, 25, of Asheville, N.C., and Ian Stasko, 25, of Salt Lake City, were struck while standing by a large tree. “There was a big bolt of electricity that consumed them,” Mr. Martin said in a telephone interview, after completing the autopsies. The men, whose bodies were found on Sept. 18, had been reported missing in the San Juan National Forest Wilderness Area, in the southwestern corner of Colorado, on Sept. 13.