Pink Lady

Telling it apart

• The female carries a salmon-pink washed abdomen, unique among our mayflies.
• The male is far paler, olive-tan, and could almost pass for a different species if you only know the female.
• Only two tails — same genus, Epeorus, as the Quill Gordon.
• Size 14–16, in fast, well-oxygenated water, in the evening.

Same genus, same underwater trick

The Pink Lady shares the genus Epeorus with the Quill Gordon, and with it the same emergence trick: the nymph splits its shuck underwater rather than at the surface, and what rises is already a winged dun. As with its spring cousin, that moves the vulnerable moment from the film to the rise — a nymph or emerger fished deep, before duns show up on top, often stays the most productive choice.

Why only the female is pink

In several mayfly species, males and females diverge in colour and size — genuine sexual dimorphism, not just individual variation. The male, whose main job is forming a visible mating swarm to attract a partner, tends to stay paler and slimmer. The female, who carries the eggs, is usually bigger and more coloured.

In the Pink Lady that difference is especially striking: the female's pink abdominal wash has no real equivalent on the male, to the point that an angler who only knows one sex could mistake them for two different species.

Mixed in with the sulphurs

The Pink Lady shares its evening schedule, and often its river, with the Sulphur, which makes on-the-wing identification hard in fading light. Tail count (two versus three) settles it for certain, but takes a close look.

In practice, look for the Pink Lady specifically in the fastest, best-oxygenated seams — its genus Epeorus oxygen requirement keeps it in swifter water than the Sulphur comfortably tolerates.