The sight of a ladybug usually brings a smile to people's faces. After all, if one lands on your hand it is thought to make your greatest wish come true -- or at least bring you good fortune. But swarms of ladybugs by the Baltic Sea have left holidaymakers feeling less than lucky. This summer, there's been a plague of the little red insects and what's worse, they bite. It feels like a pin prick, victims say. The local authorities have dispensed tips for dealing with the insect infestation -- put fly screens on the windows and avoid brightly coloured clothing.