Scarce grey flag
The Scarce grey flag is one of the eight rare and threatened riverflies which have been designated as conservation priorities by the UK Government and are listed on the UK Biodiversity Action Plan (BAP). This webpage gives details of the Scarce grey flag and has links to more detailed documents.
Scarce grey flag (Hydropsyche bulgaromanorum)
Scarce grey flag (Hydropsyche bulgaromanorum) © Peter Barnard
The only recent records for the species from the river Arun in Sussex, all other records are over 100 years old. The adults emerge and fly between June and October. Threats to this species include pollution, unsympathetic dredging, siltation, engineering works, abstraction and the removal of marginal vegetation and trees.
To see the Scarce grey flag (Hydropsyche bulgaromanorum) Species Dossier click here.
To see the Scarce grey flag (Hydropsyche bulgaromanorum) Summary Sheet click here. To find out more about the Riverfly Partnership and the Riverfly BAP Project click here.