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
Peak: 7/15-8/30

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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