Rivellia syngenesiae

Alternative names
Small Semaphore Fly

A distinctive little picture-winged fly that is most likely to be confused with the ulidiid Herina frondescentiae or some tephritids of the genus Urophora, though the wing markings are very different when compared with these. The adults wave their wings much like some Herina and Sepsis species.

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.


Damp or marshy places where it seems to be associated with Greater Bird's-foot Trefoil.

When to see it


UK Status

This is a widespread and locally common species.

VC55 Status

The record of 6th June 2019 is the first for 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