Don't bug me: experts baffled by mystery insect

The experts at London's Natural History Museum pride themselves on being able to classify and display thousands of species -- from birds and mammals to insects, dinosaurs and snakes -- and are confident they can identify most living things on the planet.

Except for a tiny red-and-black bug that has appeared in the museum's gardens.

The almond-shaped insect, about the size of a grain of rice, was first seen in March 2007 on some of the plane trees that grow on the grounds of the 19th-century museum, collections manager at the museum Max Barclay said today.