11/27/12

Insects and other foods the trout should be eating:
Hatching:
1.    BWOs (Little and baetis BWOs)
2.    Little Yellow Quills
3.    Needle Stoneflies
4.    Midges

Most available/ Other types of food:
5.    Sculpin, Minnows (Streamers)
6.    Craneflies (larvae)




Fly Fishing Strategies - Which Flies To Use -
Coming Tomorrow

Blue Wing Olive Confusion: Before I provide the strategies that I recommend for the coming week, let
me cover two things I think anglers sometimes get a little confused over.

1. Available and Easy to acquire aquatic insects versus number of insects in the water:
From a fly fishing standpoint, there's a huge difference in the insects that are readily available for
the trout to eat or those that are easy to acquire, and those that are in the stream but not readily
available and easy to acquire.
In terms of numbers, there are as many aquatic insects in the streams of
the Smokies in the nymphal (larval) stage of life at this time as there ever are. As I have often mentioned
before, most of them are stonefly and mayfly nymphs. The big majority of them are clinger nymphs that stay
mostly under or at least down between the rocks on the bottom of the stream. That makes it difficult for the
trout to obtain them. Trout focus on the insects that are hatching but more so on those getting ready to
hatch. At this time of the year, that mostly midges and BWOs.

2. Blue-winged Olives - the single largest catch all, common name confusion in fly fishing for trout
Blue-wing Olive is the most misunderstood, misused and most confusing name of all the common names of
aquatic insects in cold water trout streams. As with all aquatic insects, the only true way to identify them is by
their scientific names. It is impossible to identify all of the insects anglers call BWOs because it varies greatly
with the location and even the stream. Many different mayflies, even including the large Western Green
Drakes are in the same family as some of them and from an appearance standpoint only, look just like the
perfect BWO. The wings are blueish tinted cream and the body an olive green. I don't want to make this a
BWO article because that would take many pages or maybe even a book. I do want to list most of the
mayflies that exist in the streams of the Smokies that are called Blue-winged Olives. This should explain why
the BWOs are on the list of available insects for most of the entire year and at times, just about the only thing
of significance.
.


Acentrella ampla  Baetid mayfly
Acentrella barbarae  Baetid mayfly
Acentrella parvula  Baetid mayfly
Acentrella species  Baetid mayfly
Acentrella turbida  Baetid mayfly
Acentrella turbida
Acerpenna macdunnoughi  Baetid mayfly
Acerpenna pygmaea  Baetid mayfly
Baetis alachua  Baetid mayfly
Baetis brunneicolor  Baetid mayfly
Baetis flavistriga  Baetid mayfly
Baetis intercalaris  Baetid mayfly
Baetis pluto  Baetid mayfly
Baetis tricaudatus  Baetid mayfly
Centroptilum alamance  Baetid mayfly
Centroptilum species  Baetid mayfly
Centroptilum triangulifer  Baetid mayfly
Cloeon species  Baetid mayfly
Diphetor hageni  Baetid mayfly
Heterocloeon species  Baetid mayfly
Labiobaetis propinquus  Baetid mayfly
Paracloeodes minutus  mayfly
Paracloeodes species  Baetid mayfly
Plauditus dubius  mayfly
Plauditus species  mayfly
Plauditus virilis  mayfly
Procloeon rivulare  Baetid mayfly
Procloeon species  Baetid mayfly
Procloeon viridoculare  Baetid mayfly
Pseudocloeon propinquum  Baetid mayfly
Pseudocloeon species  Baetid mayfly

I'm sure I probably missed some but this should give you an idea of the numbers of different species in the
Smokies called BWOs. It even consist of two different families one of which are crawler nymphs and one of
which are swimming nymphs. By far the majority are swimming nymphs and that's why our Perfect Fly
Blue-winged Olive nymphs imitate a swimming nymph. To emphasis the importance of this, number one, trout
can see nymphs much better than insects on the surface of the water and number two, a swimming BWO
nymph looks about as much like a clinger, crawler or burrower nymph as a house cat looks like a greyhound
dog.
In case you still don't get it, your nymphs should imitate the real specific type of nymph your
trying to imitate much more than your dry flies need to match the duns.  
There are 55 insects above
that have been officially identified in the park that anglers call Blue-winged Olives and some of them hatch
twice a year.

Now do I need to explain why you will often see the Blue-winged Olive mayfly listed as important throughout
the year?
Copyright 2012 James Marsh
Attenella attenuata  ephemerellid mayfly
Attenella species  ephemerellid mayfly
Dannella provonshai  ephemerellid mayfly
Dentatella coxalis  
Drunella allegheniensis  ephemerellid
Drunella conestee  ephemerellid mayfly
Drunella cornuta  ephemerellid mayfly
Drunella cornutella  ephemerellid mayfly
Drunella lata  ephemerellid mayfly
Drunella longicornis  ephemerellid mayfly
Drunella species  ephemerellid mayfly
Drunella tuberculata  ephemerellid mayfly
Drunella walkeri  ephemerellid mayfly
Drunella wayah  ephemerellid mayfly
Serratella carolina  ephemerellid mayfly
Serratella deficiens  ephemerellid mayfly
Serratella molita  ephemerellid mayfly
Serratella serrata * ephemerellid mayfly
Serratella serratoides  ephemerellid mayfly
Serratella species  ephemerellid mayfly
Serratella spiculosa * ephemerellid mayfly
Timpanoga lita  ephemerellid mayfly
Timpanoga simplex  ephemerellid mayfly
Timpanoga species  mayfly
Keep in mind, that some of these insects called BWOs are
bi-brooded, meaning they
hatch two times a year.
Mayflies called Blue-winged Olives in
Great Smoky Mountains National Park