Hatch Guide · Mayfly (Ephoronidae)

White Fly

The White Fly emerges in massive evening blizzards in August and September. The hatch lasts only 20–40 minutes at dusk but produces explosive surface activity.

Peak months: AugustSeptember

Top fly patterns

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Month-by-month activity

Number of rivers where the White Fly hatch is active each month.

Jan
Feb
Mar
Apr
May
Jun ●
Jul
Aug
2 rivers
Sep
Oct
Nov
Dec

Rivers where White Fly hatches

How to fish the White Fly

Arrive well before dark. A size 12–14 White Fly Spinner fished flush in the film. Use 6X tippet minimum.

Frequently asked

When does the White Fly hatch?

Peak emergence: August, September. Timing varies by elevation, latitude, and water temperature.

What flies match the White Fly hatch?

Top patterns: White Fly Spinner (size 12-14).

What rivers have a good White Fly hatch?

White Fly hatches are documented on 2 rivers including: Farmington River, Housatonic River.

How do I fish the White Fly hatch?

Arrive well before dark. A size 12–14 White Fly Spinner fished flush in the film. Use 6X tippet minimum.

What is the White Fly?

The White Fly emerges in massive evening blizzards in August and September. The hatch lasts only 20–40 minutes at dusk but produces explosive surface activity. Family: Mayfly (Ephoronidae).

Related

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