Hi Graham
It's listed on quite a few checklists, including the recent CEH Freshwater list - see this link on the sandbox:
http://nbn-sd-dev.nhm.ac.uk/taxon.php?l … 0000008425
This is the situation in the master copy though and some of this hasn't been published to the NBN Atlas or iRecord. We're currently in the process of publishing to all the partners so it should go live in the coming week, fingers crossed! :)
Chris Raper, Manager of the UK Species Inventory, Angela Marmont Centre for UK Biodiversity,
Natural History Museum, Cromwell Road, London, SW7 5BD. (tel: 020 7942 5894)
also Tachinid Recording Scheme (http://tachinidae.org.uk/)