A fly with a rather bluish grey chequered appearance.
Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.
Around the nests of its larval food source.
Best May to August.
The flesh fly Amobia signata is what is known as a 'cleptoparasite'. It lays its eggs in the nests of solitary bees and wasps. When the larvae hatch, they eat the food provided by the adult bee or wasp for its own larvae.
Not well recorded in Britain but seems more frequent in the southern half of the country.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015