Large Skipper  -  Groot dikkopje Ochlodes venatus , male; digital pictures.
'Water refinery dunes', Vogelenzang NH, The Netherlands, 15 June 2003.

Large Skipper  -  Groot dikkopje Ochlodes venatus , female; digital picture.
'Water refinery dunes', Vogelenzang NH, The Netherlands, 20 June 2004.