River Intelligence · Entomology

Read the Water. Match the Hatch.

Every river has an entomological fingerprint — the bugs it grows, when they hatch, and how trout eat them. Learn the bugs, cross-reference live flows, and fill your box before you go.

Hatching NowPale Morning Dun Green Drake Trico Sulphur Small Western Red Quill Flav Gray Drake Callibaetis Spotted Sedge Golden Stone Yellow Sally Brown Drake Pink Lady Terrestrials Scuds & Sowbugs

Encyclopedia Hatch Calendar River Fingerprints Match the Hatch Bug School

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Mayfly

Hatching Now

Pink Lady

Epeorus albertae

A pink-bodied clinger mayfly of late-summer evenings. Sparse compared to a PMD hatch, but it arrives when little else is happening and fish in riffle tailouts key on it hard.

Order

Mayfly

Family

Heptageniidae

Genus

Epeorus

Hook

#12-14

Season · Peak Jul-Sep evenings

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

Pink Lady

Emergence Triggers

Water Temp

55–66°F

Flow

Low, clear late-summer flows

Light

Evening, the last two hours

Water Type

Fast riffles and their tailouts

Lifecycle

How Trout Eat It — Stage by Stage

Nymph

Summer, in fast water

Flat clinger nymphs grip fast-water cobble. Dead-drift through riffle heads before the evening emergence.

Match It

Pink Albert Nymph#12-14

$3.15

Dun

Evening

Pale pink-cream duns on riffle tailouts at dusk. A cream or pink parachute is usually enough.

Match It

Pink Lady Dun#12-14

$3.25

Parachute Adams#12-14

$2.95

Spinner

Dark

Spinners fall over the riffles after the dun window closes.

Match It

Rusty Spinner#12-14

$2.95

Cross-Reference

Where This Bug Matters

Madison River

≋ Waterlands · Hatch data blends USGS gauges, NOAA temps & regional emergence records

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