Hatch Chart for Michigan Rivers
Common Insect Hatches of Northern Michigan. The most important hatches are in Bold.
Our Strongest Hatches are in Red.
Common Name | Latin Name | Group | Emergence Dates | Emergence Times |
Tiny Black Stonefly #16-20 | Allocapnia sp., Nemoura aldipennis | Stonefly | 1/1-4/30 | noon-4pm |
Early Black Stonefly #10-14 | Taeniopteryx nivalis | Stonefly | 2/21-4/30 | noon-4pm |
Early Brown Stonefly #12, 14 | Brachyptera fasciata | Stonefly | 3/15-5/10 | 1pm-7pm |
Blue-winged Olive #16 | Baetis tricaudatus | Mayfly | 4/15-11/1 | noon-3pm |
Dark Hendrickson #12, 14 (Hendrickson, Red Quill) | Ephemerella subvaria | Mayfly | 4/20-5/20 Peak: 5/1-7 |
10am-4pm |
Little Black Caddis #16-18 | Chimarra aterrima | Caddisfly | 4/20-5/31 Peak: 5/1-14 |
noon-10pm |
Grannom Caddis #14-16 | Brachycentrus americanus | Caddisfly | 4/20-7/31 | 2pm-dark |
Medium Bown Stonefly | Perlodia isoperla | Stonefly | 5/10-7/31 | afternoons |
Little Yellow Stonefly #14-18 | Allloperla sp. | Stonefly | 5/15-8/15 Peak: 5/28-6/21 and 7/1-7/14 |
afternoons |
Giant Stonefly #2-8 (Salmonfly) | Pteronarcys dorsata | Stonefly | 5/15-6/30 | any time |
Green Oak Worm #8-12 | Lepidoptera sp. | Terrestrial | 5/15-7/10 | day |
Green Caddis #10-18 (Green Rock Worm) | Rhycophila fenestra | Caddisfly | 5/1-6/30 Peak: 5/21-6/14 |
2pm-dark |
March Brown #10, 12 | Stenonema vicarium | Mayfly | 5/17-6/20 | noon-4pm |
Cinnamon Caddis #14-20 | Hydropsyche sp. | Caddisfly | 5/20-9/30 Peak: 5/31-6/31 |
4pm-dark |
Quill Gordon #12, 14 | Epeorus pleuralis | Mayfly | 5/24-7/12 | 1pm-4pm |
Light Hendrickson #14 | Ephemerella rotunda | Mayfly | 5/3-6/20 Peak: 5/7-14 |
noon-5pm |
Slate-winged Mahogany #16, 18 (Little Red Quill) | Paraleptophlebia adoptiva | Mayfly | 5/3-7/8 | 11am-2pm |
Gray Drake #8, 10 (Spinner Fall) | Siphlonurus alternatus | Mayfly | 5/15-7/26 Peak 5/21-6/15 |
dark |
Giant Michigan Mayfly #4, 6 (Hex, Michigan ) | Hexagenia limbata | Mayfly | 6/10-7/10 | 10pm-4am |
Blue-winged Olive #14, 16 | Baetis spp. | Mayfly | 6/15-7/12 Peak: 5/7-5/31 |
8pm-10pm |
Leadwing Coachman #10 | Isonychia bicolor | Mayfly | 6/15-8/15 | 4pm-10pm |
Ants #12-24 (Black and Cinnamon) | Hymenoptera: Formicidae | Terrestrial | 6/15-9/30 | day, evening |
Pale Evening Dun #16, 18 | Ephemerella dorothea | Mayfly | 6/1-7/15 | 8pm-midnight |
Great Orange Sedge | Phryganglia ptilostomis | Caddisfly | 6/1-7/31 | evenings |
Brown Drake #8, 12 | Ephemera simulans | Mayfly | 6/1-7/4 Peak: 6/7-14 |
8pm-midnight |
Beetles | Coleoptera | Terrestrial | 6/1-9/30 | day, evening |
Tiny Blue-winged Olive #22* | Baetis punctiventris | Mayfly | 6/23-9/8 | 10am-9pm |
Light Cahill #12, 14 | Stenonema sp. | Mayfly | 6/5-8/14 | 2pm-10pm |
Crickets | Orthoptera sp. | Terrestrial | 7/1-10/15 | any time |
Grasshoppers #6-12 | Orthoptera sp. | Terrestrial |
7/1-9/30 |
day |
Tiny White-winged Black #22 (Trico)* | Tricorythodes spp. | Mayfly | 7/20-9/1 Peak: 7/21-8/7 |
6am-10am |
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