Northern rivers

Au Sable, Manistee

Use Emergence Dates*

Mid-state rivers

Muskegon, Pere Marquette

Subtract 1-2 weeks

Tip of the Mitt rivers

Sturgeon, Pigeon, Black

Add 1-2 weeks

Upper Peninsula rivers

Fox, Carp, Ontonagon

Add 2-4 weeks

Common Name

Latin Name

Group

Emergence Dates*

Emergence Times

Tiny Black Stonefly #16-20

Allocapnia granulata, Nemouridae

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

Slate Wing Mahogony #16-18 (Little Red Quill)

Paraleptophlebia adoptiva

Mayfly

4/15-7/8
Peak: 5/1-14

10am-4pm

Blue-winged Olive #16-20

Baetis vagans

Mayfly

4/15-8/24
Peak: 5/1-7 and 6/7-21

noon-3pm

Dark Hendrickson #12, 14 (Hendrickson, Red Quill)

Ephemerella subvaria 

Mayfly

4/20-5/20
Peak: 5/1-14

10am-4pm

Little Black Caddis #16-18

Chimarra aterrima

Caddisfly

4/20-7/31
Peak: 5/1-14

noon-10pm

Grannom Caddis #14-16

Brachycentrus americanus

Caddisfly

4/20-7/31

2pm-dark

Borcher's Drake #12, 14

Leptophlebia cupida

Mayfly

4/20-8/15

10am-4pm

Green Caddis #10-18 (Green Rock Worm)

Rhyacophilidae fenestra

Caddisfly

5/1-6/30

2pm-dark

Medium Bown Stonefly #8-14

Perlodidae lsogenus

Stonefly

5/1-7/31

afternoons

Light Hendrickson #14, 16

Ephemerella rotunda

Mayfly

5/3-6/20

noon-5pm

Giant Stonefly #2-8 (Salmonfly)

Pteronarcys dorsata

Stonefly

5/15-6/30

any time

Great Speckled Olive Mayfly #10-14

Siphloplecton basale

Mayfly

5/15-7/15
Peak: 5/14-31

noon-5pm

True Hendrickson #14, 16

Ephemerella invaria

Mayfly

5/15-7/20
Peak: 5/21-6/7

noon-5pm

Sulphur Dun Mayfly #16, 18

Ephemerella dorothea

Mayfly

5/15-7/8
Peak: 6/7-30

noon-5pm

Blue-winged Olive #14, 16

Baetis spp.

Mayfly

5/15-7/12

8pm-10pm

Tiny Blue-winged Olive #20, 22

Baetis cingulatus

Mayfly

5/15-8/30

10am-9pm

Green Oak Worm #8-12

Lepidoptera sp.

Terrestrial

5/15-7/10
Peak: 6/7-21

day

Little Yellow or Green Stonefly #14-18

Allloperla sp.

Stonefly

5/15-10/30

afternoons

White Miller Caddis #14, 16

Nectopsyche

Caddis

5/15-10/30

afternoons

March Brown #10, 12

Stenonema vicarium

Mayfly

5/17-7/20

noon-4pm

Early Gray Drake #12, 14

Siphlonurus rapidus

Mayfly

5/20-6/15
Peak 6/1-7

dark

Cinammon Caddis #14-20

Hydropsyche sp.

Caddisfly

5/20-9/30

4pm-dark

Sand Drake Mayfly #12, 14

Stenonema fuscum

Mayfly

5/20-7/20
Peak: 6/1-14

8pm-midnight

Quill Gordon #12, 14

Epeorus pleuralis

Mayfly

5/24-7/12

1pm-4pm

Pale Evening Dun #16, 18

Ephemerella dorothea

Mayfly

6/1-7/15

8pm-midnight

Brown Drake Mayfly #8-12

Ephemera simulans

Mayfly

6/1-7/4
Peak: 6/1-14

8pm-midnight

Great Orange Sedge #8, 10

Phryganlidae ptilostomis

Caddisfly

6/1-7/31

evenings

Beetles

Coleoptera

Terrestrial

6/1-9/30

day, evening

Midges #20-28

Diptera

.

6/1-10/30

.

Light Cahill #12, 14

Stenonema sp.

Mayfly

6/5-8/14

2pm-10pm

Giant Michigan Mayfly #4-8 (Hex, Michigan Caddis)

Hexagenia limbata

Mayfly

6/10-7/10
Peak: 6/21-7/7

10pm-4am

Late Gray Drake #10, 12

Sephlonurus alternatus

Mayfly

6/10-7/26
Peak: 7/1-14

dark

Mahogany Dun Mayfly #10, 12

Isonychia sadleri

Mayfly

6/15-7/30
Peak: 6/21-7/14

4pm-10pm

Golden Drake Mayfly #10, 12

Ephemera varia

Mayfly

6/15-8/7

.

Leadwing Coachman #10, 12

Isonychia bicolor

Mayfly

6/15-9/15

4pm-10pm

Ants #12-24 (Black and Cinammon)

Hymenoptera: Formicidae

Terrestrial

6/15-9/30

day, evening

Big Golden Stonefly #6, 8

Paragentina media

Stonefly

6/21-8/7

.

Slate Winged Olive Mayfly #14, 18

Ephemerella lata

Mayfly

6/21-8/14

.

Dark Slate Wing Olive Mayfly #18, 20

Ephemerella simplex

Mayfly

6/21-9/30

.

Tiny Blue Winged Olive Mayfly #22, 24

Pseudocloen anoka

Mayfly

6/21-9/30

.

Crickets

Orthoptera sp.

Terrestrial

7/1-10/15

any time

Grasshoppers #6-12

Orthoptera sp.

Terrestrial

7/15-9/30

day

Tiny White-winged Black #22-26 (Trico)

Tricorythodes stygiatus

Mayfly

7/20-10/20

6am-10am

Small Slate Mahogany Dun Mayfly #16, 18

Paraleptophlebia debilis

Mayfly

7/20-10/30

.

Black Dancer Caddisfly #18, 20

Mystocides sepulchralis

Caddisfly

8/1-9/30

.

Little Medium Olive Mayfly #22-24

Baetis pygmalus

Mayfly

8/7-9/30

.

White Fly Mayfly #12, 14

Ephoron album

Mayfly

8/14-9/30

.

Blue-winged Olive #14, 16

Baetis tricaudatus

Mayfly

8/15-11/1

11am-4pm

Slate Wing Brown Mayfly #14, 16

Baetis heimalis

Mayfly

9/1-11/1

.