Detached
Detached Olive, Halford

FLY FISHING DICTIONARY
Shell

Shell Fly, Berners
   
emerger  English
  The word "emerge" in this case means the coming out from the water into the air, and emergence means the moment of hatching. This is a fly fisherman's term of calling the growth stage of an aquatic insect at the certain time period from the starting point of transformation from a nymph/pupa to the point when the wing has been extended completely. The concept of emerger carries such importance in fly fishing, that the author will elaborate in more detail.
  Probably, Doug Swisher and Carl Richards used the term "emerger" for the first time. They used the term emerger for mayfly in "Selective Trout" (1971). In 1975, Caucci / Nastasi stressed the significance of emerger in the excellent book "Hatches." Later, in 1991, Swisher and Richards proposed in their book "Emergers” a new concept of emergence for various aquatic insects such as mayfly, caddis, stonefly, midge, and they stressed their importance to anglers. It seems understandable that trout tend to feed on easy-to-catch food, and an emerger is in a most vulnerable condition in favor of the enemy. Their discovery was great and it was accepted by fly fishermen with surprise and applause. Emergers caught the attention of fly fishermen, and by now the emerger pattern flies have become very popular.
  In the example of a mayfly, a nymph goes up to the water surface to emerge, and the hatch will take place while it is floating just under the surface film where the nymph will become a dun. In the midst of a hatch, while a mayfly passes through a state without the ability to move freely by itself, it is easy for fish to prey upon it. Therefore, in fly fishing, the fly imitating this emerger or an emerging dun, i.e., an emerger pattern, becomes very important. Swisher / Richards summarized the emerger pattern as "the state where the dun's body half comes out in the air on the water surface, and the rear half of the body is contained in the shack of a nymph."
  Although a Swisher/Richards once asserted a concept of the stillborn dun in "Fly Fishing Strategy" (1975), they changed to call it later emerging dun or emerger in the "Emergers" (1991).
  Finally, it seems certain that the name “flymph” coined by Vernon (Pete) S. Hidy in 1963 meant the emerger.
ReferenceSelective trout, 1971. Hatches, 1975. Fly fishing strategy, 1975. Emergers, 1991.
floating nymph, stillborn, Selective Trout, Hatches, flymph
 
 
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Fallen Tsubaki (Camellia japonica) flowers. Izu, Shizuoka Pref., Japan.
Fallen Tsubaki (Camellia japonica) flowers. Izu, Shizuoka Pref., Japan.
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