Violet ground beetle - Carabus violaceus.
Dave Brown (July)
A member of my hillwalking group dislodged a small rock in the Moelwyns and uncovered this beauty. This is the most common Carabus in the British Isles. They can also be found all the way to eastern Siberia and Japan. They are black with a conspicuous metallic blue or purple sheen - hence the name. A flightless bug, their wing casings are fused together and they have a flattened flange all the way around the edges. Violet Ground Beetles are nocturnal hunters. During the day they can be found resting under logs, stones and leaf litter.
The best thing I like about these particular beetles is their appetite for slugs which they enjoy eating along with many other invertibrates. I just wish I had more violet ground beetles in my garden!