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: Male imago. Associated species: Betula. Identified by: Malcolm Storey. Comment: on fermenting Birch sap run. Category: microscope photograph. Image scaling: low magnification. Real world width(mm): 0. Photographic equipment used: Canon EOS10D digital SLR and Meiji microscope with x2.5 projection eye-piece. DPI defaulting to 72..