Spider on Frog - _TNY_4443

During a visit to the Västanåfallet waterfall we came across quite a few European common frogs (Rana temporaria) in the basin below the falls.

 

This one let me take a couple of shots, but it wasn't until I got home that I noticed there is a spider sitting on the frog's neck. It's obiously a difficult ID, but I think it could be one of the Pirata/Piratula species.

 

Another frog from the same place: www.flickr.com/photos/tinyturtle/41139498625/

Done