Dicheirotrichus gustavii is a ground beetle which emerges from cracks or holes to feed on tidal salt marshes after dusk.

Despite living in a coastal environment, it has no cycle of behaviour linked to the tides, simply scurrying for dry land when caught by the approaching sea.

[1] It will eat the larvae of another intertidal beetle, Bledius spectabilis, if they are left unprotected by the adult.

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