Mayday Mayfly
Rowley's attractor mayfly nymph — holographic body, hot orange rib, Simi Seal thorax.
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Mayday Mayfly
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About This Pattern
A brown holographic-tinsel-bodied mayfly nymph with a hot orange wire rib and Simi Seal thorax. Inspired in part by the Rainbow Warrior underbody style.
On the Water
How to Fish It
Fl. orange rib is the trigger. Don't overdress the Simi Seal — a tight, compact thorax works best.
When to Use
Searching nymph. Attractor point-fly duty on unfamiliar water.
History & Lore
Gilbert Rowley started tying the Mayday Mayfly right out of college around 2010. The tinsel underbody on the abdomen was inspired by Lance Egan's Rainbow Warrior — this was before Lance and Gilbert had become friends, and Egan flies were already staples in Rowley's box. After some trial and error, he landed on a few variations that fished consistently well. The hot-orange wire rib serves as both segmentation and an attractor, and the Simi Seal dubbing adds a super-buggy element to the thorax. Fast to tie, reliable on the water — a searching-nymph go-to.
Frequently Asked Questions
What size Mayday Mayfly should I use?
The Mayday Mayfly is most commonly tied in sizes 14–18. Searching nymph. Attractor point-fly duty on unfamiliar water.
What does a Mayday Mayfly imitate?
The Mayday Mayfly primarily imitates mayfly nymph, attractor. Fl. orange rib is the trigger. Don't overdress the Simi Seal — a tight, compact thorax works best.
How do you fish a Mayday Mayfly?
Fl. orange rib is the trigger. Don't overdress the Simi Seal — a tight, compact thorax works best.
Pattern Details
- Category
- Nymphs
- Sizes
- 14–18
- Hook Styles
- jig hook
- Imitates
- mayfly nymph, attractor
- Water Types
- freestone, tailwater, pocket water
- Origin
- Gilbert Rowley
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catches logged by anglers
Pattern Details
- Category
- Nymphs
- Sizes
- 14–18
- Hook Styles
- jig hook
- Imitates
- mayfly nymph, attractor
- Water Types
- freestone, tailwater, pocket water
- Origin
- Gilbert Rowley