UPDATE 1-Russian rouble hovers near two-week lows

The Russian rouble weakened on Tuesday, hitting its lowest levels in nearly two weeks and wiping out gains in the previous session on month-end demand from exporters. Traders said that for the rest of the month and the first half of September, the market may face a seasonal shortage of foreign currency supply from exporters, despite their informal agreements with the authorities to sell more of their forex proceeds and buy roubles.