I assume its a Spintharina, and probably S. vagans (Radoszkowski, 1887), but I have very little experience with them, Paolo should be able to tell you more


 believe me.
 believe me. 
 
 see here for the exact location and date: http://observado.org/waarneming/view/105746082?_popup=1 Seen on Rock Samphire (Crithmum maritimum).
 see here for the exact location and date: http://observado.org/waarneming/view/105746082?_popup=1 Seen on Rock Samphire (Crithmum maritimum).