more than just being able to enjoy watching these critters in their watery world, this video shows us some interesting aspects of the naturals that might be beneficial to keep in mind when recreating them at the bench.
while a lot of artificial nymph bodies are rigid, we’ll notice that the naturals bend quite a bit around the abdomen area, specially while swimming. this bend can go up as well as down, meaning that the conventional way of imitating them, with the tail and abdomen bent in a downward position is only half correct.
when they’re not swimming a good number of mayfly nymphs have an enormous amount of movement once again in the abdomen area but this time because of their breathers flapping back and forth to collect air.
many tiers have included these elements in the form of articulated bodies and ostrich herl or cdc breathers, just name a few, but there’s still a lot of possibilities left in fly design. a little imagination and experimentation with different materials just might bring on a new wave of nymph design.
of course, we can rightfully argue (and i’m one of them !) that most of the time, such details aren’t of any practical significance as many imitations that don’t really imitate anything at all are equally effective but i guess that as fly tiers, we’re all after the elusive dream of coming up with the next ‘miracle’ fly, the one that will turn on the fish when everything else leaves them indiferent !
source: Tightline Productions