Latest captures:
7754 at Hever, Jan 11
7789 +7785 at Kaldenkirchen, Jan 17, 2017
7806 at Dendermonde, Dec 30, 2016
7812+7835 at Hoeselt, Nov 30, 2016
Older captures:
7784 + 7780 at Leuvenheim, Aug 28, 2005
7837+7835 at Zandvliet, May 5, 2006
7799+7797 at Itterbeek, May 13, 2006
Willem J. Steen discovered on May 2, 2011
