Family - Gnaphosidae
Genus - Micaria
At least Fifteen European species.
Known as Glossy Ant Spiders. They all have an iridescent abdomen.
Difficult to photograph as they don't stay still for a moment.
They do look quite Ant-like when they run which may put off
I've only ever seen these Spiders at the Cemetery, in the grass,
along the edges of Graves.
Brighton Extra Mural Cemetery