Date

Latin Name

Common Name

Size

Time of Day

Patterns

2/14-3/15

Taeniopteryx Maura

Black Tan Stane

12

Morning & Afternoon

Black Hares Ear

3/1-4/15

Capnia Vernalis

Little Black Stone

16

Midday

Black Hares Ear

3/20-4/24

Baetis

Little Blue Wing Olive

16-20

Early Afternoon

Blue Wing Olive Dry & Emerger

4/1-5/15

Taeniopteryx Fasciata

Early Brown Stone

10-14

Afternoon

Early Brown Stone (wet), Brown Stone Nymph

4/10-5/20

Epeorus Pleuralis

Quill Gordon

12-14

AM & Late Afternoon

Quill Gordon Wet

4/15-5/10

Paraleptophlebia, Adoptiva

Blue Quill

16-18

Early Afternoon

Blue Quill (dry & nymph)

4/15-5/15

Chimarra Atteima

Little Black Caddis

18

Early Afternoon

Black CDC Caddis

4/20-5/15

Ephemerella Subvaria

Hendrickson

12-16

2 till 5 PM

Red Quill (male), Hendrickson (female), Gray Muskrat (nymph)

4/20-5/10

Brachycentrus, Numerosus

Grannom Caddis

14-16

3 till 7 PM

Leadwing Coachman, Dark Brown Elk Wing Caddis

4/20-5/15

Limnephilus Submonilifor

Crème Caddis

14

Late Morning

Cream CDC Caddis, Cream Emergent Pupa

4/21-6/20

Pteronarcys Dorsata

Giant Black Stonefly

4-8

Morning

Montana Nymph, Black Stonefly Nymph

5/1-6/30

Isoperla Signata

Light Brown Stonefly

12-14

Afternoon

Brown Hares Ear

5/8-6/20

Ephemerella Rotunda

Sulfur

14-16

2 till 8 PM

Sulfur Dun & Spinner

5/10-7/20

Rhyacophila

Green Caddis

14

4 till 9 PM

Green Caddis Larva & Emerger

5/15-6/10

Stenonema Vicarium

March Brown

10-12

Early Afternoon

March Brown Dun, Ausable Wulff, Gold Ribbed Hares Ear (nymph)

5/20-6/25

Ephemerella Dorothea

Little Sulphur

18

Evening

Pale Evening Dun, PMD Emerger CDC

5/20-6/25

Stenonema Fuscum

Gray Fox

12-14

Throughout the Day

PAusable Wulff or Gray Fox Dun

5/25-6/15

Ephemera Guttulata

Eastern Green Drake

10

3 PM - dark

Green Drake Dun, Coffin Fly, White Haystack

5/30-8/1

Ephemerella Cornuta

Blue Winged Olive

12-14

7 AM – 5 PM

Blue Winged Olive Emerger, Blue Winged Dun (CDC Dun works well)

5/30-6/30

Psilotreta Frolntalis

Dun Caddis

14

Noon till dusk

Dun CDC Caddis, Dun Caddis Emerger

6/5-9/10

Isonychia Bicolor

Mahohany Dun

10-12

1 PM till dark

Chocolate Haystack, Dun Variant, Leadwing Coachman (wet)

6/5-9/1

Hydropsyche Symphitopsyche

Tan Caddis

14-16

1 PM till Dark

Tan Caddis Emerger, Tan CDC Caddis, Elk Hair Caddis

6/8-7/25

Stenonema Canadense

Light Cahill

14

4 PM till dark

Light Cahill Nymph, Emerger, Ausable Wulff

6/10-8/20

Alloperia Imbecilla

Little Green Stonefly

16

Late AM till 7 PM

Lime Sally

6/15-7/30

Anthopotamanthus Disticntus

Cream Variant

10-12

Evening to dark

Cream Variant or White Haystack

6/20-8/15

Isoperia Biliineata

Little Yellow Stonefly

14-16

Afternoon-dark

Yellow Sally

6/20-7/20

Ephemera Varia

Yellow Drake

12

Noon-evening

Yellow Mayfly Dun

6/20-7/30

Paraleptophelebia Mollis

Dark Blue Quill

16-18

10 AM – 4 PM

Dark Blue Quill, Jenny Spinner

6/20-7/20

Acroneuria Evoluta

Great Yellow Stonefly

6-8

Evening (riffles)

Golden Stone

7/5-9/15

Tricorythodes

Trico’s

20-24

Morning

Trico Dun, Usual, Spinners

7/25-9/20

Hydroptila

Micro-caddis

18-22

Sporadic all day

Hairy Caddis

8/10-8/29

Hexagenis Altocaudata

Slate Drake

10-12

5 PM-dark

Big Slate Drake, Dark Rusty Spinner

9/1-9/20

Baetis Tricaudatus

Little Blue Dun

18

1 AM-6 PM

Little Blue Dun, Rusty Spinner

9/15-10/1

Acentrella

Blue Dun

22

Noon – 6 PM

Blue Wing Olive