Marlboro Ducati's Casey Stoner had his final qualifying lap ruined by an insect which  splattered across the Aussie's visor, restricting his vision.

Stoner was out on his third and last qualifying tyre when the errant bug committed suicide, but Stone still managed to get second on the grid, a quarter of a second behind poleman Jorge Lorenzo.

"For the race we're in quite good shape. We've still got a few things to improve for tomorrow but we're reasonably happy because we're running consistent lap times," said Stoner.

"I'm a little bit disappointed with qualifying. Of the three qualifying tyres you always use the first one to try and get used to it and build from there but the second tyre didn't work as we hoped and then on the third one I got a bug on my visor at the start of the lap! I couldn't get the rip-off visor off because I was trying to push but the bug distracted me and I couldn't see properly.

"It's a silly little thing but stuff just doesn't seem to be going for us at the moment! Anyway, second place is still good and tomorrow's another day. We're in good shape for the race and we'll do the best we can."