I found this beetle on some grass meadows, it appears to be a ground beetle but I'm not sure, it doesn't appear in any of my guides. Can anyone help? It's around 6mm long and was found just over a week ago.
Do you means the stripes across the abdomen? Your specimen isn't exactly fresh and the abdomen has expanded forcing the plates to separate, and that's what has caused, or at least enhanced, the striped effect. You see this, for example, with beetles drowned in pitfall traps.