Elaphrus riparius


Length 6.5 to 7.5 mm. Metallic green elytra with pale lilac markings and a pair of round violet depressions that appear to be edged with silver in strong light. Legs long, femora metallic green, strongly microsculptured, tibiae red but darkened and metallic at apex. Tarsi shining metallic green.

Identification difficulty

Easiest to find by searching wet mud among waterside vegetation during hot weather but they scatter quickly and are difficult to follow.

When to see it

Adults are active from April onwards peaking from May to August with numbers dwindling towards winter.

Life History

They breed in early spring and the predatory larvae develop through the summer.

UK Status

Occurs throughout England and Wales although scarcer in the north and seemingly mostly coastal in the west country.

VC55 Status

Fairly frequent in Leicestershire and Rutland. There were approximately 206 VC55 records for this species up to March 2015.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map