May ICU - Brown

Brig - September 2025

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The May ICU is a clever little mayfly nymph designed by Norman Maktima, a signature tyer for Umpqua. Norman has spent over two decades as a guide and competed for years on Team USA, so he knows a thing or two about catching fish.

This pattern is a quick tie and features just the right touches to make it stand out—its slender body, CDC collar, and pearlescent cheeks not only look sharp in your fly box but also grab the attention of unsuspecting trout.

- Purchase this fly here! -

Material List
  • Hook: Umpqua XC400BL-BN - 14
  • Hook Alternate: Hanak H 400 BL Jig Hook - 14
  • Bead: Hareline Slotted Tungsten Beads - Classic Colors - Copper - 1/8" (3.3mm)
  • Bead Alternate: Fulling Mill Slotted Tungsten Beads - Copper - 3.2mm
  • Thread: UTC Ultrathread 70 Denier - Wood Duck
  • Tail: Spanish Coq De Leon - Pardo
  • Rib: Chartpak Fly Tying Markers - Delta Brown (Dark Brown)
  • Cheeks: Veevus Pearl Tinsel - Medium
  • Abdomen: SLF Spikey Squirrel Dubbing - Rusty Brown
  • Collar : Fulling Mill CDC Feathers - 1G - Natural Grey
  • Hot Spot: UTC Ultrathread 70 Denier - Fl. Orange
  • Materials & Alternate Materials Listed Below
    UTC Ultrathread 70 Denier - Thread - Fly Fish Food
    UTC Ultrathread 70 Denier - Thread - Fly Fish Food

    UTC Ultrathread 70 Denier

    $2.49
    Hareline Slotted Tungsten Beads - Classic Colors - Beads - Fly Fish Food
    Hareline Slotted Tungsten Beads - Classic Colors - Beads - Fly Fish Food

    Hareline Slotted Tungsten Beads - Classic Colors

    $7.99
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food
    Fulling Mill Slotted Tungsten Beads - Beads - Fly Fish Food

    Fulling Mill Slotted Tungsten Beads

    $10.26
    Hanak H 400 BL Jig Hook - Hooks & Shanks - Fly Fish Food
    Hanak H 400 BL Jig Hook - Hooks & Shanks - Fly Fish Food

    Hanak H 400 BL Jig Hook

    $11.00
    Umpqua XC400BL - BN - Hooks & Shanks - Fly Fish Food
    Umpqua XC400BL - BN - Hooks & Shanks - Fly Fish Food

    Umpqua XC400BL-BN

    $10.50
    Veevus Pearl Tinsel - Wire , Tinsel & Lead - Fly Fish Food
    Veevus Pearl Tinsel - Wire , Tinsel & Lead - Fly Fish Food

    Veevus Pearl Tinsel

    $4.49
    SLF Spikey Squirrel Dubbing - Dubbing - Fly Fish Food
    SLF Spikey Squirrel Dubbing - Dubbing - Fly Fish Food
    SLF Spikey Squirrel Dubbing - Dubbing - Fly Fish Food

    SLF Spikey Squirrel Dubbing

    $3.99
    Spanish Coq De Leon - Pardo - Hackle - Fly Fish Food
    Spanish Coq De Leon - Pardo - Hackle - Fly Fish Food
    Spanish Coq De Leon - Pardo - Hackle - Fly Fish Food
    Spanish Coq De Leon - Pardo - Hackle - Fly Fish Food

    Spanish Coq De Leon - Pardo

    $13.75
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food
    Chartpak Fly Tying Markers - Fly Tying Accessories - Fly Fish Food

    Chartpak Fly Tying Markers

    $8.99
    Fulling Mill CDC Feathers - 1G - Feathers & Marabou - Fly Fish Food
    Fulling Mill CDC Feathers - 1G - Feathers & Marabou - Fly Fish Food
    Fulling Mill CDC Feathers - 1G - Feathers & Marabou - Fly Fish Food

    Fulling Mill CDC Feathers - 1G

    $10.99
    Spanish Coq De Leon - Brown - Hackle - Fly Fish Food
    Spanish Coq De Leon - Brown - Hackle - Fly Fish Food

    Spanish Coq De Leon - Brown

    $13.75