* Month-end fixing demand initially boosts euro
* Euro on track for biggest monthly fall since Jan 2009
* US consumer spending flat, dims risk appetite
(Updates prices, adds quote)
By Gertrude Chavez-Dreyfuss
NEW YORK, May 28 (Reuters) - The euro drifted lower against the dollar in a choppy session on Friday as weaker-than-expected U.S. economic data tempered risk appetite, weighing on stocks and triggering modest selling of the single currency after early gains.
U.S. data showing consumer spending was unexpectedly flat in April, its weakest reading since September, weighed on the euro after stocks fell. [
].In recent weeks, the euro has become a proxy for risk appetite in the currency market amid the euro zone's debt crisis, rising and falling in tandem with global stocks.
"U.S. data today is not really that good for risk trades," said Vassili Serebriakov, senior currency strategist at Wells Fargo in New York. "So we have seen equities lower and some mild selling in the euro and also in the Aussie dollar, another pro-risk currency."
In midday New York trading, the euro was down 0.1 percent against the dollar at $1.2354 <EUR=> after rising to $1.2452.
The euro started declining after the U.S. personal consumption and spending report, with investors trying to make a run at stops in the $1.2330 area. There was some German buying interest in the euro early in the New York session, but a trader said that could reverse if the single currency breaks below $1.2330.
A separate report showing business activity in the U.S. Midwest grew more slowly than expected in May initially boosted the euro, but the currency later fell as investors grew cautious of risk trades. For the data, see [
].Against the yen, the euro <EURJPY=R> fell 0.2 percent to 112.35.
The dollar <JPY=> slipped 0.2 percent to 90.89 yen, while the dollar index <.DXY>, which measures the greenback's performance against a basket of currencies, was up at 86.341.
Earlier in global trading, the euro was higher against the dollar, boosted by month-end demand as investors square up positions for May, a period that featured massive selling of the single currency due to the debt crisis in the region.
The euro fell about 12 cents against the dollar in the month to hit a 4-year low of $1.2143. It was on track for a hefty 7.1 percent monthly decline, which would be the biggest drop since January 2009. It would also be the sixth straight monthly fall.
Losses came despite a $1 trillion safety net set up by European officials earlier this month to ward off the adverse effects from Greece's debt problems and the announcements of new austerity measures from Spain and Portugal.
Analysts said a key support level is $1.2135, the 50 percent Fibonacci retracement of the 2000-08 advance, just above the recent four-year low of $1.2143. Charts further show a monthly close below $1.2135 would favor more weakness, with analysts seeing the next downside support at $1.1640, a low hit in November 2005.
While market turmoil has calmed, concerns about the euro zone remain entrenched.
Shaun Osborne, chief currency strategist at TD Securities in Toronto, cited a heavy auction schedule in the euro zone and some lumpy government bond redemptions over the next few months, which could turn the market's focus to Italy.
"While Italy may not be a structurally vulnerable as Greece or Portugal, the relative underperformance of Italian credit default swaps this month suggests that investor concerns may be rotating away from Greece," Osborne said.
(Editing by Chizu Nomiyama)