I found many of these guys on a variety of flowers like Buttercup, Hyacinth, yellow flag Iris, April 2009, Nature Reserve Bourgoyen, Gent, Belgium

by bonitin Jun 11, 2009 9:35 AM

Their size is about 4-5mm, they have a small white dot on their backs...

by bonitin Jun 11, 2009 9:37 AM

Side and under side view..

by bonitin Jun 11, 2009 9:39 AM

...and its funny face..

by bonitin Jun 11, 2009 9:41 AM