These extraordinary little pieces are sculpted by artist and musician Ged Casserley. I think they're great, though maybe not for the faint hearted. Ged tells me he uses bits of actual insects in their construction - wings, legs, feet. Presumably these are insects that have lived a full and productive life, and died a natural death, before Ged gets his hands on them. Remarkably steady hands he must have too, in order to manipulate such tiny objects.
Here's a link to more of Ged's work, at the online Saatchi Gallery: http://www.saatchi-gallery.co.uk/yourgallery/artist_profile//82326.html