May's Mystery Picture - What is it?

Email us with your answer!
(There is no prize, it's just for fun and you might get a mention on our website!)

April 2008. Mystery Picture - The wing of a Peacock Butterfly  Inachis io.

This strikingly coloured butterfly can be seen flying between March and October and is found throughout Ireland, southern Britain and west Scotland.  It is so named because of its 'eye spots' which resemble those on the tail feathers of peacocks.
There is one generation of young caterpillars each year which are black with white spots and shiny spines.  They eat nettles and hops in gregarious 'clumps' around the tender leaves, only dispersing when they have gorged and are ready to pupate.  The adults which emerge later in the summer season feed on the nectar of flowers such as buddleia.  Many will hibernate, over-wintering  in out-buildings, hollow trees and sheltered nooks and crannies.  When the weather gets warmer during the following spring, they emerge to mate and lay eggs and the next generation of Peacock butterflies will begin.
 

Surprisingly, no-one correctly identified April's Mystery Picture!  Many thanks go to everyone who took the time to have a guess!