Maine's Mayflies in Order of Emergence Without all the Fluff

Name & Species Nymphal Type Emergence Hook Size
Light Blue Winged Olive
Ephemerella Cornuata
& Attenuata		 Crawler Apr. 14 - May 20
Mid-Afternoon to Dusk		 16 - 20
Dark Blue Winged Olive
Baetis Vagans		 Darting Swimmer Apr 17 - May 17
Late Afternoon to Dark		 Surface 14 - 18
Sub-Surface 16 - 20
Grey Quill
Callibaetis Fluctuans		 Darting Swimmer Apr - Sept
Multi-Brooded
Late Afternoon		 Surface 14 - 16
Sub-Surface 14 - 18
Quill Gordon
Epeorus Pleuralis		 Clinger Apr. 22 - May 29
10 am - 2 pm		 10 - 14
March Brown
Stenonema vicarium		 Clinger May 3 - Jun 15
10am - Dusk		 Surface 8, 10, 12xl
Sub-Surface 10, 10exl, 12
Blue Quill
Paraleptophlebia Adoptive		 Feeble Crawler May 7 - June 10
11am - 5pm		 Surface 12 - 16
Sub-Surface 14 - 18
Hendrickson (F)
Ephemerella Subvaria		 Riffle Crawler Apr 29 - May 29
Mid-Afternoon		 Surface 12 - 16
Red Quill (M)
Blasturus Cupidas		 Mid-current Crawler May 6 - June 8 Same
Grey Fox
Stenonema Fuscum		 Clinger June 1 - June 30
All Day Sporadically
Great on overcast or rainy day		 Surface 8 - 12
Sub-Surface 10 Std or 3xl
Pale Evening Dun
Ephemerella Dorothea		 Feeble Crawler June 7 - July 10
If real warm 7pm - Dark
Great on overcast or rainy day		 Surface 16 - 18
Sub-Surface 14 - 18
Green Drake
Ephemera Guttulata		 Burrower June 7 - July 15
7pm - 9pm		 Surface 6 - 8 4xl
Sub-Surface 10 - 10 3xl
Light Cahill
Stenonema Ithaca		 Clinger June 15 - July 30
All day sporadically
Remember overcast and rainy days		 Surface 10 - 14
Sub-surface 10 - 12
2xl-14
Cream Variant
Ephemera Varia		 Burrower June 15 - August 7
6pm - Dark		 Surface 8 - 12
Sub-Surface 10 - 10 3xl
Yellow Drake
Potamanthus Distinctus		 Feeble Crawler June 21 - August 15
6pm - Dark		 Surface 8 - 12
Sub-Surface 10 - 10 3xl
Hex
Hexagenia Limbata		 Burrower June 21 - August
Sporadic afternoon on		 Surface 3 - 8 4xl
Sub-Surface 6 - 8 4xl

Here are your best Imitations (Flies)

Pheasant Tail Nymph

This pattern will imitate the dark Ephemerella (Hendrickson, Red Quill, Pale Evening Dun, Cream Variant and Green Drake), Isonychia (Mahogany Dun), Paraleptophlebia (Blue Quill) and Epeorus (Quill Gordon) nymphs and of course the first important early spring mayfly, the Ephemerella cornuta,attenuata & Baetis vegans (Blue Winged Olive). Use this style for your emerging and sub-surface applications.

Bead Head Pheasant Tail Nymph

When you need to be down and quick, this is the trick. Use this fly for all your bottom presentations.

Gold Ribbed Hare's Ear Nymph

These flies will imitate the light Ephemerella (Hendrickson, Red Quill, Pale Evening Dun, Cream Variant and Green Drake), Baetis (Dark Blue Winged Olive) and Stenonema (March Brown, Grey Fox and Light Cahill) nymphs. Fish these patterns in the surface tension or just below the surface.

Bead Head Hare's Ear Nymph

Use your bead heads when you absolutely need to be deep and bouncing across the bottom.

Zug Bug

This pattern will imitate the Isonychia (Mahogany Dun) nymphs.

Bead Head Zug Bug

I'll let you figure it out for yourself.

Wooly Bugger

Black and Olive patterns will imitate baitfish, leeches and stonefly nymphs.

White Marabou

Add this to any pattern and the very fine barbules will give the imitation a much more lively action which can result in consistent strikes.

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