Shane Stalcup ties another variation of an Emerger he likes to call the Emerging Dun. In Shane’s excellent book on Mayflies entitled Mayflies “Top to Bottom” he includes variations in tan, brown and yellow. Shane's following observation about mayflies is his inspiration of this fly:
"As an emerging dun floats along, its thorax splits and the new adult can be set free. The first part of the insect that comes free are the legs then the head, followed by the wings. The skin of the nymph trails behind, this is better known as the trailing shuck. When the insect is in this phase of emergence, it looks like a nymph and an adult. While this stage is occurring, the emerging dun is partially in the surface film and riding the waves fairly flat to the surface."