| Guide Notes:
Mahogany
Dun
Paraleptroghlebia
bicornuta, P. debilis Red Quill
Seasons:
Henry's Fork Season - August
20 - September 30
YNP - Gallatin - July,
September - October
Habitat:
Live in
silty, weedy, slower sections Size:
Nymphs:
#16-18
Stout Crawler, Poor Swimmer
Squared Head, Three Equal
Tails, Dark Reddish Brown
Mature nymphs move to slower
water where leaf and other detritus accumulate.
Look for them in trailing
plants and moderate currents.
Floating nymph may be most important stage to
fisherman
Emergers:
Size: #16-18
Mid- morning to mid-afternoon
nymphs crawl several inches out of the water on sticks, rocks, and
plant stems.
Some may emerge on sticks or
plant stems underwater. Slow to moderate currents
Duns:
#16-#18
Light Dun/Smoky Gray unmarked
wings
Three tails, rounded hind
wings
Dark reddish brown bodies
Duns remain on the water a
long time while drying and extending wings
Spinners:
#16-#18
Can be heavy and important
Mid-morning and mid-
afternoon
Males have dark bodies and
white abdomens
Females have dark mahogany
bodies and pale wings
Time:
10:00 A.M. to 3:00 P.M.
(Civilized)
Presentation:
Dead drift
Quartering downstream with
imitation reaching the fish before the leader.
Place:
WR #16, and "The Lower Ranch"
especially silty muddy bottoms.
Strategy:
Rainbow trout are
especially fond of taking nymphs in the surface film.
Work individual trout rather than casting to groups,
study the riseform and feeding rhythm.
Use
light and long tippets and
a reach cast upstream or downstream for drag free drift with bug
reaching the fish before your leader.
Patterns
with a post or upright wing are easier to see so make a good lead fly
with a flush floating dropper.
Work
current seams, slow, shallow margins around plants and weeds.
Use a
low profile and casting
angle, keep false casts away from fishing area. On the delivery, place
only the fly and tippet in front of the trout. Do not let your fly line
land close to the trout, or it will spook.
Patterns:
Fur Nymph
Floating Nymph
Sawyer's Pheasant Tail
Loop Wing CDC Emerger
Thorax Mahogany Dun
Sparkle Dun
Mahogany Dun Parachute
Tying Bench:
Mahogany Dun Biot Cripple
-
Hook:Daiichi 1270 or TMC 2312
12-#14.
-
Thread: Dark brown or black
6/0.
-
Tail:Brown Z-Lon.
-
Rib:Dark brown 3/0 monocord.
-
Abdomen:Dark brown goose
biot.
-
Thorax:Dark brown dubbing.
-
Hackle:Black or slate.
-
Wing:Black or slate deer or
elk hair.
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