When does the Flav (Small Western Green Drake) hatch?

June–August, typically 14:00–18:00. It starts from about 11°C, peaks around 14°C and tails off by 19°C.

What flies imitate the Flav (Small Western Green Drake)?

Flav Sparkle Dun, Adams Parachute, typically on a #14–12 hook.

How big is the Flav (Small Western Green Drake)?

Spinner stage: 8–11mm. That matches a #14–12 hook.

Mayfly · Aquatic insect

Flav (Small Western Green Drake)

Drunella flavilinea

Size

8–11mm

Hook size

#14–12

Hatch window

Season June–AugustPeak time 14:00–18:00

Water temperature

14° peak

11°19°

How fish feed on it

An evening fall, olive-bodied and easily confused with everything else on the water at that hour.

Flies that imitate this

Flav Sparkle Dun

Adams Parachute

Ecology

Rivers & stillwaterFreestone rivers

Where you'll find this

North America — WestPresent

Present throughout

Identification

Drunella flavilinea is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in Central America, North America. In North America its range includes southwestern, northern Canada, northern Mexico, and the western United States.

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