NEW YORK, May 13 (Reuters) - Standard & Poor's on Monday removed WorldCom Group (NasdaqNM:WCOM - News) and US Airways Inc. (NYSE:U - News) from its benchmark S&P 500 index, saying shares in the two struggling companies were no longer representative of their industries.

The change removed the two worst-performing shares in two badly battered industries -- telecommunications and airlines -- from the closely followed S&P 500 index.

WCOM is sinking fast...next will be NASDAQ delisting

WorldCom, US Airways dropped from S&P 500 index