MOSCOW, May 29 (Reuters) - The Russian rouble weakened

against the U.S. dollar on Wednesday.

By 0715 GMT, the rouble was 0.37% lower at

88.90 to the dollar after trading in a range of 88.430 to

89.348.

Against the euro, the rouble fell 0.08% to

96.52 and dropped 0.23% to 12.22 against the yuan

.

Brent crude oil, a global benchmark for Russia's

main export, rose 0.3% to $84.51 a barrel.

Russian stock indexes fell. The dollar-denominated RTS index

fell 0.4% to 1,170.09. The rouble-based MOEX Russian

index lost 0.01% to 3,302.44.

($1 = 88.9000 roubles)