Slender-footed Robberfly - Leptarthrus brevirostris


Length: 7-10mm. This is a dark fly with black legs except for orange on the tibiae - but this colour doesn't extend to the apex. It has black legs with red bands on the mid and hind tibia. The female's ovipositor is dorsolaterally flattened. The genus is distinguished by the thorax having long hairs but no bristles.

Similar Species

The only other European species in the genus is the rare L. vitripennis which has more brightly reddish legs and with orange on the metatarsi (black in brevirostris).

Identification difficulty

In many parts of the UK this is a species found on chalk grassland but species in the Midlands seem to have a less specific habitat preference.

When to see it

May - August

UK Status

Local and but widespread in Britain.

VC55 Status

The New Lount record below is the first known 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