This 20 mm long beetle looked very different to other ground beetles because of its flattened body and a thorax that is notched both anteriorly and posteriorly. Elytra showed fine parallel ridges and had a metallic sheen which reflected purple and teal colours. Legs were long had short spines.
These ground beetles are said to feed on caterpillars. They are strongly attracted to U-V emitting lights and can congregate in large numbers but do not stay in one place for long. They stay hidden during the day but are very active at night.
Wingspan about 30mm. Initially on a brightly lit power pole but fell like a leaf after the first flash. This specimen is much more richly coloured than others found previously. Almost red on the dorsal view.
A large paropsid leaf beetle (15mm length) which looked fully black to the eye but the flash has revealed a set of full length, deep red lines.
No dents were noticed on or around the pronotum.
I have always found these at night so suspect they hide in daytime maybe under bark.