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Mayfly Family Leptohyphidae (Tricos)

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» Family Leptohyphidae (Tricos)
Genus in LeptohyphidaeNumber of SpecimensNumber of Pictures
TricorythodesTricos631

7 genera aren't included.
Common Name
MatchCommon Name
***Tricos
Pictures Below
Read about the Tricorythodes genus for details. It is very important to trout anglers and it's the only significant trout stream genus in this family.

Most of the other genera are found only in warm waters in Mexico and the Southwest.

Pictures of 6 Mayfly Specimens in the Family Leptohyphidae:

Specimen Page:12
Female Tricorythodes (Tricos) Mayfly SpinnerFemale Tricorythodes (Tricos) Mayfly Spinner View 9 PicturesI photographed this Trico alive, although it didn't have much time left. These things die very quickly after they mate and it's hard to rush them back to the studio.
Collected September 8, 2006 from the Neversink River in New York
Added to Troutnut.com by Troutnut on October 4, 2006
Female Tricorythodes (Tricos) Mayfly SpinnerFemale Tricorythodes (Tricos) Mayfly Spinner View 7 PicturesThis Trico was alive in the photos but didn't pose well.
Collected September 8, 2006 from the Neversink River in New York
Added to Troutnut.com by Troutnut on October 4, 2006
Female Tricorythodes (Tricos) Mayfly SpinnerFemale Tricorythodes (Tricos) Mayfly Spinner View 4 PicturesThis recently deceased Trico was smaller and darker than the others I photographed from the same morning.
Collected September 8, 2006 from the Neversink River in New York
Added to Troutnut.com by Troutnut on October 4, 2006
Specimen Page:12

2 Streamside Pictures of Leptohyphidae Mayflies:

A thick mating swarm of Tricorythodes mayfly spinners hovers the West Branch of the Delaware near Hale Eddy one early fall morning.  View the picture full-size and you'll be able to make out the wings and tails on most of those little white dots.

This was one of many such clouds visible all up and down the river.  The mayflies were impressive, but the trout did not hold up their end of the bargain -- there was not a rise in sight.  In this picture: Mayfly Genus Tricorythodes (Tricos). From the West Branch of the Delaware River in New York.
A thick mating swarm of Tricorythodes mayfly spinners hovers the West Branch of the Delaware near Hale Eddy one early fall morning. View the picture full-size and you'll be able to make out the wings and tails on most of those little white dots.

This was one of many such clouds visible all up and down the river. The mayflies were impressive, but the trout did not hold up their end of the bargain -- there was not a rise in sight.

In this picture: Mayfly Genus Tricorythodes (Tricos).
Date TakenSep 2, 2005
Date AddedFeb 8, 2006
AuthorTroutnut
Spider webs are nature's hatch charts.  They often tell you what's been hatching recently.  This one reveals a Trico hatch.  In this picture: Mayfly Genus Tricorythodes (Tricos). From the Rush River in Wisconsin.
Spider webs are nature's hatch charts. They often tell you what's been hatching recently. This one reveals a Trico hatch.

In this picture: Mayfly Genus Tricorythodes (Tricos).
LocationRush River
Date TakenJul 21, 2005
Date AddedJan 25, 2006
AuthorTroutnut

1 Underwater Picture of Leptohyphidae Mayflies:

Here's the surface of the river viewed from below during a Tricorythodes spinner fall.  Several dead spinners are visible.  In this picture: Mayfly Genus Tricorythodes (Tricos). From the Namekagon River in Wisconsin.
Here's the surface of the river viewed from below during a Tricorythodes spinner fall. Several dead spinners are visible.

In this picture: Mayfly Genus Tricorythodes (Tricos).
Date TakenJul 18, 2004
Date AddedJan 25, 2006
AuthorTroutnut

Recent Discussions of Leptohyphidae

Where To Find Trico Nymphs 3 Replies »
Posted by Lastchance on Jul 2, 2011 in the genus Tricorythodes
Last reply on Jul 10, 2011 by Entoman
Do they attach themselves in the silt near the shore? I'd like to study a few of them.
Thanks,
Bruce
Replytrico broods 26 Replies »
Posted by Gutcutter on Aug 1, 2010
Last reply on Sep 6, 2010 by Adirman
from what i can gather, there are several trico broods per "season". help me out here bug geeks/science guys. my experience with this hatch tells me that there is a "break in the action" after a few weeks into it and then it slowly picks back up. the reason that i am asking is that
1- i don't know
2- there is a lull right now on my favorite trico water. i hit it good a week ago and i have heard that there are a few bugs but no surface activity
3- i don't have as much time anymore to drive 3 hours and see

so...
about how long does it take for the bugs to "ramp it up" again?
tony
ReplyTrico Tips 47 Replies »
Posted by Martinlf on Jul 21, 2007 in the genus Tricorythodes
Last reply on Jul 14, 2010 by Martinlf
I'll start with a fly patterns, follow with a bit of what I think I know about Tricos (Entomologists, please offer corrections if needed), and close with a few questions.

I love designing different patterns for Tricos, partly to keep myself entertained, and partly to show the fish something new from time to time. Jason's photos and the opinions of some fussy fish have led me to tie an extra large thorax recently on all my Tricos. My old standby is a parachute tied reverse, with a high vis post over the bend of the hook, and grizzly hackle, with no tails. It's modeled on Al's Trico, which can be found on the Little Lehigh Flyshop website. It's very visible and fish generally approve. My newest fly is a take off from one of Gonzo's (Lloyd Gonzales) patterns in his book Fly-fishing Pressured Water, and it also shows the influence of Al's Trico. Gonzo ties an upside down Trico on a wide gap hook using synthetic material for the wing. I tie this fly also, and it certainly does catch fish, but I recently tied a version with grizzly hackle, making an oversize thorax and palmering hackle over the thorax to create a full wing. I then clipped hackle from the top of the fly (which becomes the bottom, as this is an upside down fly) so that the fly would sit flat, upside down, on my tying table. A drop of Locktite brush-on super glue on the bare recently clipped thorax after darkening the hackle stem with black marker and the fly was done. (By the way, I put tails on this one to balance it [P.S. Later correction: this pattern doesn't need the tails. I've caught plenty fish now on a tailless version] .) It caught several fish the first time I tried it on a heavily fished stream.

I believe for some, if not most species of Tricos, males hatch at night, females in the morning, and that the spinners fall when the air temperature hits the upper 60's. This generally means that as the season goes on, spinners hit the water later and later. Sometimes by 7:00 am (or earlier) in the early summer, by 10:00 (or later) in the fall.

It's been unseasonably cool in the Northeast the past couple of days, and I would have gone out this morning but for taking my daughter to a midnight showing of The Order of the Phoenix (I just couldn't get up) but I'm wondering if the spinner fall happens later than normal on cool mid-summer mornings like today's. I hope to find out Monday, but am curious if anyone has experiences to share. Also, does anyone have an effective Trico pattern to share? I'm always looking for ideas.
ReplyTrico patterns in earnest via Grabbit 8 Replies »
Posted by Grabbit on Aug 9, 2007 in the genus Tricorythodes
Last reply on Mar 24, 2010 by Martinlf
I thought I would put these trico patterns up on this board as it gets the most attention and they might have a better chance of finding their way to the person that was looking for new ideas. These patterns are material specific and all proven on the water. I am a small fly fanatic, I use a double zero wt. sage with very light/long tippet. I do hunt for big fish.... yes it is true.

Two summers ago I used nothing but dun patterns, all thorax patterns and few Catskills mixed in for good measure. The results where incredible with the fully hackled thorax dun patterns. Who says that spinner patterns are the only way to fly during the trico season... wrong! wrong! wrong!

After the spinners are drowned and well down river the sporadic tricos that sparkle like diamonds over the slick holds get plenty of attention. I again tested these pattern on Spring Creek last year with like results... testing grounds were WELL below the pardise on a well known road curve in that river (yea that multi micro current ego bashing pool) I had several misses and finally some scores that lifted my spirits before the rain spoiled the rest of the trip. If you know the pool I speak of you may also know never let a big fish get below you as the battle will soon be over and the walk back up to the bridge will be L-------------------------------o-----------n-----------------g. If you like the fly's and need a materials list let me know. OUT.

(User-posted images are only viewable in the forum section.)

THORAX TRICO QUILL BODY



(User-posted images are only viewable in the forum section.)

TRAILING SHUCK PARATRICO



(User-posted images are only viewable in the forum section.)

CDC EMERGING TRICO
.

HOW MANY TIMES DO WE HAVE TO GO THRU THIS???? PLEASE STAY OUT OF MY FRIGGIN BACKCAST.....Grabbit.....

ReplyTaxonomy question 3 Replies »
Posted by Doublezz105 on Oct 29, 2009
Last reply on Oct 30, 2009 by Doublezz105
I have two keys (Pekarsky et al and Merrit and Cummins) listing Tricorythodes in the tricorythidae family, but Troutnut and Voshell show tricorythodes in the leptohyphidae family. Has tricorythodes been moved to leptohyphidae or vice versa?
Reply
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