There are four common Green Drake
species in Western rivers: Drunella grandis, Drunella doddsi, Drunella
flavilinea, and Drunella coloradensis. The first two are usually lumped
together as "Green Drakes" while the latter two are often referred to
as "Flavs" and "Slate-Winged Olives," respectively.
Source: West Fly Website URL; http://www.west-fly-fishing.com/fly-pattern-recipe/dry/greenparadrake.shtml
Source: West Fly Website URL; http://www.west-fly-fishing.com/fly-pattern-recipe/dry/greenparadrake.shtml
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