Bembidion testaceum (also known as river shingle beetle)[1] is a small, fast-moving water beetle in the Trechinae subfamily that can be found in Austria, Benelux, Bulgaria, Czech Republic, France, Germany, Great Britain, Greece, Hungary, Liechtenstein, Poland, Romania, Slovakia, Spain, Switzerland, Ukraine, and all states of former Yugoslavia.

The distinctive feature of this kind of species is that it has a dark head and pronotum which has a greenish outline.

[1] The species can be found on sand and gravel, usually by sea side.

[1] Due to its decline in Great Britain the species therefore are protected by UK Biodiversity Action Plan.

The decline happen to be from habitat loss which is due to the invasion of Himalayan Balsam and floods.