Michigan Mayfly Hatching Chart
Compiled by Bill Ludlow AZFlytyer@aol.com
Looking for more information? Click on this link to read about the book that has it all for
Michigan trout stream insects Mayflies of Michigan Trout Streams by Justin Leonard
| Common Name | Latin Name | Dates of Emergence |
| Blue Winged Olive #16 | Baetis vagans | April 15 - Aug. 24 |
| Hendrickson #12 | Ephemerella subvaria female | April 20 - May20 |
| Red Quill #14 | Ephemerella subvaria male | April 20 - May 20 |
| Lt. Hendrickson #14 | Ephemerella invaria | May 3 - June 20 |
| Little Red Quill #16,18 | Paraleptophlebia adoptiva | May 4 - July 8 |
| Red Quill #14 | Leptophlebia cupida | May 15 - Aug. 31 |
| March Brown #10,12 | Stenonema vicarium | May 17 - June 20 |
| Gray Fox #12 | Stenonema fuscum | May 22 - June 27 |
| Quill Gordon #12,14 | Epeorus vitreus | May 24 - July 12 |
| Sulphur Dun #16,18 | Ephemerella dorothea | June 1 - July 15 |
| Brown Drake #8,10 | Ephemera simulans | June 1 - July 4 |
| Light Cahill #12,14 | Stenonema canadense | June 5 - Aug. 14 |
| Mahogany Dun #10,12 | Isonychia bicolor | June 10 - Sept. 20 |
| Giant Michigan Mayfly | Hexagenia limbata | June 10 - July 20 |
| Light Cahill #10,12 | Stenonema frontale | June 11 - Aug. 25 |
| Dark Olive Dun #14 | Isonychia sadleri | June 14 - Aug. 12 |
| Gray Drake #8,10 | Siphlonurus alternatus | June 17 - July 26 |
| Tiny Blue Winged Olive #22,24 | Pseudocloeon anoka | June 23 - Sept. 8 |
| Giant Michigan Mayfly #4,6 | Hexagenia limbata | June 25 - July 18 |
| Slate Winged Olive #14,16 | Ephemerella lata | June 25 - Aug. 23 |
| Slate Winged Olive #14 | Ephemerella walkeri | June 26 - July 24 |
| Tiny White Winged Black | Tricorythodes stygiatus | July 20 - Sept. 1 |
This Chart is most accurate for northern lower peninsula streams. Actual emergence dates will vary depending on weather and latitude. Whether you catch fish or not will vary depending on chance and aptitude.
Click below for more information on Michigan Streams
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Michigan Article - The Deerfly
Michigan Article - Night Fishing for Brown Trout
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