Longitude (deg): -1.2. Latitude (deg): 51.4. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 20' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Imago. Identified by: Malcolm Storey. Comment: swarm, moving into our house via the air bricks by the back door. Category: standard photograph or close-up. Real world width(mm): 0. Photographic equipment used: Canon EOS400D digital SLR with Tamron SP AF Di 90mm Macro 1:1 lens.