willow fly

plural willow flies · alternative willowfly

1. Any stonefly of the genus Chloroperla.

   The usual colors—salmon, pink, and red—work well. Something that happens on the Colorado beginning in late May is the stonefly, or Willow Fly, hatch.

   2013, Al Marlowe, Fly Fishing the Colorado River: An Angler's Guide

   2 more examples

   Willow Fly, comes on the Middle of August, or sometimes sooner, and continues tll the Dun Blue comes again. It has four Wings, which lie flat on the Back: the Belly of a dirty-yellow, and the Back of a dark-brown.

   1781, Richard Brookes, The Art of Angling, page 92

   Locally, with the exception of the few days that the willow fly is plentiful, an autopsy even of fish seen feeding on surface flies will discover far more subaqueous food than flies.

   1902, Western Field: The Sportsman's Magazine of the West