May Fly Fly

May Fly

The May Fly imitation, each mimicking one of the thousands of species for this insect, ranging from nymph to dry fly.

How it's tied

The Mayfly Pattern comes in many varieties and sizes, tied on hooks ranging from size 22 to 8, depending on the target species and specific mayfly being imitated. Mayfly patterns can represent various stages of the mayfly lifecycle. The ones you see in the picture here is the most well known adult form. Materials such as dubbing, synthetic fibers, or natural materials like hackle feathers or deer hair can be used for the body, wings, and legs. Tail fibers can be made from materials like microfibbets, hackle fibers, or pheasant tail fibers.

What it mimics

The Mayfly Pattern is designed to imitate various species of mayflies, an essential food source for many fish species in freshwater environments. If you thought there is just one, there are more than 3000 species of mayflies, grouped in 42 families. If you're interested in reading more about the May Fly species, check out this page on Wikipedia.

The Mayfly Pattern can be tied in various sizes, colors, and forms to match the specific mayfly species found in different fishing environments.

Where it's used

The Mayfly Pattern is effective in a wide variety of waters, including rivers, streams, and lakes. Read up on the water that you're visiting to understand which May Fly species are present, and in which stage they are at the moment you're going fishing.

The most well known waters, where fly fishers from all over the world travel to in order to experience a May Fly hatch, are probably the English chalk streams.

Fly tying video for the May Fly


May Fly May Fly May Fly

Fish you can can fly fish for with the May Fly

Brown Trout


Rainbow Trout

Mayflies (Latin: Ephemeroptera)

The May Fly mimics one or more species from the insect order Mayflies

Latin: Ephemeroptera

Mayflies are aquatic insects known for their short adult lives, ephemeral presence, and importance to aquatic ecosystems.

Read more about Mayflies

Share the link to this fly

Save this fly in your favorites

Other flies




Biscuit Pattern

Black Gnat


Blue Damsel

Blue Winged Olive


Bread fly


Bunny Leech



Caddis Fly

Captain Crunch

Carnage Attractor


Chernobyl Ant

Clod Hopper

Clouser Minnow

Copper John

Crab Pattern


Czech Nymph

Daddy Long Legs

Damsel Nymph

Diawl Bach

Elk Hair Caddis

EP Streamer

Foam Beetle

Frog Popper

Glo Bug

Grannom Emerger


Grey Wulf

Griffith's Gnat

Hare's Ear Nymph



Inch Worm



Lady Bug

Lefty's Deceiver



March Brown

Mickey Finn

Montana Nymph

Muddler Minnow

Palomino Midge

Parachute Adams

Peeping Caddis

Pheasant Tail Nymph

Prince Nymph

Red Tag

Rock Worm

Royal Coachman


Salmon Egg

San Juan Worm

Sand Eel



Sedge Goddard

Shrimp Pattern


Sparkle Dun

Sparkle Pupa

Spider Pattern



Stoat's Tail

Stone Fly

Woolly Bugger


Zebra Midge


Is your favorite fly not listed? Let us know.

Discover fly fishing around the world

New info about fish, locations and countries
Upskill with tips and tricks
Save your favorite species, flies, locations and more

FlyFish Circle is run by fly fishing enthusiasts and is completely free!

Join now