Name: Cliorismia rustica (Panzer, 1804)

Family: Therevidae

Common name: Southern Silver Stiletto-fly

North East, North West and South East England, South Wales; Welsh distribution: 13 sites including 9 on the R. Usk and 3 on the R. Monnow.

Distribution map from publicly available, 10km square resolution data on the NBN Gateway.

Unmodified rivers. Extensive sand and shingle bars

Existing BAP species

Mike Williams, Environment Agency

UK BAP