![]() ![]() ![]() This type of emergence causes the insects to be well distributed on the water and keeps them constantly available to foraging trout until the duns take flight.Ĭommonly known as Gray Drakes, nymphs from the genus Siphlonurus only occasionally hatch on the surface in this typical mayfly fashion. Most fly fishers who pay attention to hatches understand that the majority of mayflies rise to the surface as they undergo the transition from nymph to dun. The behavior of Gray Drakes that may explain a lack of notoriety that is mostly unjustified. There are visual differences among the three drakes, but it is the behavior of Gray Drakes that may explain a lack of notoriety that is mostly unjustified. Less known, even to the point of obscurity in some instances, is a mayfly of roughly equal size to Green and Brown drakes, but with considerably wider geographic range, and a duration that often lasts all summer. Also, Brown Drakes are particularly susceptible to disruption from colder temperatures and wind. Brown Drakes are even larger insects, but with a smaller distribution so fewer fly fishers encounter them.Ī downside to both hatches is a relatively short emergence duration, which usually lasts no more than a few weeks. Green Drakes have a reputation as the premier mayfly event of the season based primarily on their size and their ability to incite foolish feeding behavior even on some of the most pressured trout water. While mayflies and dry-fly fishing are nearly synonymous among fly fishers, it is a rather sobering fact that these distinctive insects are usually smaller than size 14, and of dozens of different species, only three with broad distribution are large and important enough to be called "drakes." I wrote about Green Drakes and Brown Drakes in previous issues of Fly Fisherman. ![]()
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