Iridescent centurion - Sargus iridatus


Length 6 to 12 mm. The sexes of this soldier fly are similar in appearance, but the female is slightly broader at the hind end. The body is an iridescent deep blue and the wings are uniformly smoky.

Identification difficulty
Recording advice

Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.


Various habitats.

When to see it

May to August.

Life History

Breeds in dung, often cow dung.

UK Status

Widespread and fairly frequent in Britain.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

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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