It's size can vary from 3-5mm, I found it on a plastic public trash can on the country side, Ooidonk, Belgium, 26th September 2008
by bonitin Sep 30, 2008 4:53 PM
from a slightly different angle..
by bonitin Sep 30, 2008 4:54 PM
Oenopia conglobata
by Zaragoza Dec 17, 2009 10:37 AM