Flavs (Small Green Drakes, or Flavilineas)




Family: Ephemerellidae

Genus: Drunella

Life Cycle: incomplete

Three Life Stages: egg, nymph, adult cycle which includes 2 phases: dun and spinner

Emergence: June-August

Crawler Mayfly Group

Nymphs

Flavs (Small Green Drakes, or Flavilineas)

Body Description

Antennae: 2

Wings: pads

Legs: 6, stout front legs have teeth on front edge

Abdomen: no long spines

Eyes: large

Tails: 3

Body Colors: browns with olive tones

Mobility: become more active before emergence

Size: 7-9mm

Hook Size: 12-16

Found among rocks in faster current flows. They emerge from slower water by faster flows and from runs with slow to medium currents.

Dun

Dun

Body Description

Antennae: 2

Wings: 2 sets, hind wings have pointed edges, dark grey

Legs: 6

Eyes: large

Tails: 3

Body Colors: light olive with yellow tones

Mobility: must wait on the water floating or drifting after emergence for their wings to unfold before flying

Size: 7-9mm

Hook Size: 14-16

Spinner

Spinner

Body Description

Antennae: 2

Wings: 2 sets, hind wings have pointed edges

Legs: 6

Eyes: large

Tails: 3

Body Colors: dark olive to olive brown

Size: 7-9mm

Hook Size: 14-16

One day after emergence they are sexually mature. Male & females meet in swarms; after mating males fall spent on the water or ground, females hover close to the water, deposit their eggs then fall spent.



Fly Fishing - The Lifetime Sport

Copyright 2014 The Gale Group, Inc. All rights reserved.
Copyright 2014 Perigee Learning LLC. All rights reserved.
lovetheoutdoors.com is owned and operated by Advameg, Inc. Copyright 2014 Advameg, Inc.