Male Marpissa muscosa - posing, Heesch, Netherlands

Henriette and I were having dinner inside the house when this little cutie was gliding down the sides of the table. I usually don't actively stage live insects, but I figured this one asked for it. I trapped it in a glass and put the glass on our table in the garden. It wouldn't cooperate and kept running frantically inside the glass so I gave it back its freedom, a fair level playing field where it could flee my attempt to photograph it. Luckily, it didn't immediately. Quite the contrary, it's a cocky one.

It took me a long while to identify this one as the female seems to be much more often photographed. The male can be identified based on its smaller size, large black chelicerae (mouthparts), eye arrangement and pattern on the abdomen. Furthermore, finding it inside the house is another clue as this is one of few species in the Netherlands often encountered inhouse.