Had another visitor to the screen this morning. This time a PMD adult. The body length is just under 5/16".

One view to show body and wing shape and tail length ...





... and one to show the actual color ...



John

P.S. Raises the interesting question of what a fishy actually sees when looking up at a dun on the surface - the soft yellow or a harsh, dark silhouette. ( That harsh, dark silhouette could actually be a "purple haze." )