Mayflies

Top Mayfly Fly Patterns

Anglers travel from around the world to fish the Greater Yellowstone Region’s mayfly hatches. The region has world-renowned hatches of Drakes, Pale Morning Duns, Blue Wing Olives, and other mayfly species important to fly anglers. Mayfly hatches make for some of the area’s most technical dry fly fishing, with many different stages of insects that trout feed on. Anglers come with fly boxes full of various fly sizes, colors, and life stages of mayflies. Here are the top mayfly fly patterns I keep in my fly box for the Greater Yellowstone Region.

EP Comparadun (BWO)

Size #16-20

CDC Dun (BWO)

Size #16-20

EP Comparadun (BWO)

Size #16-20

Last Chance Cripple (BWO)

Size #16-18

Last Chance Cripple (BWO)

Size #16-18

Improved Sparkle Dun (BWO)

Size #16-20

Sparkle Dun

Size #16-18 (BWO)

RS2

Size #14-18

Glass Bead BWO

Size #16-18

Jiggy Micro May (BWO)

Size #16-18

JuJu Baetis

Size #16-18

Silver Bullet Baetis

Size #14-16

Copper Pheasant Tail

Size #14-18

CDC Tungsten Baetis

Size #14-18

March Brown Cripple

Size #12-14

Parachute Pheasant Tail

Size #10-16

Last Chance Cripple (PMD)

Size #14-16

Quigley's Split Flag (PMD)

Size #14-16

Parachute PMD

Size #14-16

CDC Dun

Size #16-18

Challenged PMD

Size #16-18

Galloup's Sunken Spinner

Size #14-16

Sparkle Dun

Size #14-18

Improved Sparkled Dun (Pink)

Size #16-18

EP Comparadun (PMD)

Size #14-18

Harrop's CDC Para Spinner (Rusty)

Size #14-16

CDC Biot Spinner

Size #14-16

Rusty Spinner

Size #10-16

Hi-Vis Rusty Spinner (Black)

Size #12-16

S&M Nymph Copper

Size #14-16

S&M Nymph Copper Flash

Size #14-16

Tungsten Split Case PMD

Size #14-18

Lawson's Halfback Emerger (PMD)

Size #14-16

Last Chance Cripple (Green Drake)

Size #8-10

Green Drake Cripple

Size #8-10

Foam Hackle Spinner (Green Drake)

Size #10-12

DJL Green Drake

Size #10-12

Peacock Herl Soft Hackle

Size #10

Green Drake Soft Hackle

Size #10

Foam Emerger (Green Drake)

Size #10-12

Parachute Green Drake

Size #8-12

Harroup's CDC Green Drake

Size #8-10

Rene Harrop's Captive Dun (Green Drake)

Size #10

Last Chance Cripple (Green Drake)

Size #8-10

Last Chance Cripple (Flav)

Size #14-16

Flav Cripple

Size #14-16

Galloup's Bent Cripple (Flav)

Size #14

Harrop's CDC Para Spinner (Brown Drake)

Size #8-10

Rene Harrop's Hackled Spinner (Brown Drake)

Size #8

Guide Winna Spinna

Size #10-16

Guide Winna Spinna (Black)

Size #10-16

Last Chance Cripple (Brown Drake)

Size #8-10

Brown Drake CDC Cripple

Size #8-10

Sawyer's Pheasant Tail

Size #10-18

Bushy Pheasant Tail

Size #12-14

Flashback Pheasant Tail

Size #10-18

Jig Tungsten Pheasant Tail

Size #12-18

Spanish Bullet

Size #12-18

Beadhead Pheasant Tail

Size #10-18

Soft Hackle Pheasant Tail

Size #10-16

Harrop's CDC Para Spinner (Pink Lady)

Size #16

Faded Storm Chaser

Size #16

Harrop's CDC Para Spinner (Callibaetis)

Size #14

Last Chance Cripple (Callibaetis)

Size #14-16

Improved Sparkle Dun (Callibaetis)

Size #14

Foam Hackle Spinner (Gray Drake)

Size #12-14

Foam Emerger (Hecuba)

Size #12-14

Purple Haze

Size #10-18