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Mayfly Family Leptohyphidae (Tricos)

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

7 genera aren't included.
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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 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 by Troutnut on October 4, 2006
Tricorythodes (Tricos) Mayfly LarvaTricorythodes (Tricos) Mayfly Larva View 1 Pictures
Collected June 15, 2002 from Willow Creek in Oregon
Added to by Bnewell on June 26, 2011
Specimen Page:12

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

Recent Discussions of Leptohyphidae

The Tully Trico season 10 Replies »
Posted by BioGriz on Jun 24, 2013 in the genus Tricorythodes
Last reply on Dec 17, 2013 by 12345
Preface: Any hatch where you are knee deep in trout rising and sipping bugs is awesome, regardeless if you are struggling to get a tight line. But on my home water the Tulpehocken Creek (Tully), which many of you from PA have fished before, Trico hatch brings problems...
1) Stressfull/unhealthy conditions for the trout. i.e. low water & high temps
2) A lot more fishing pressure from the "fair weather" community

I am a relative greenhorn compared to some of you who have decades of experience under your belt, and am just fishing for some general opinions here.

Had a great day at rebers using sze 22 trike spinner but i am noticing the tully temp is climbing. What kind of impact can we make on the stream? Is fishing in the morning and laying off the trout in the afternoon ok? or should the tully be left alone completely??

Thanks for your input!
ReplyWhere 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.
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

about how long does it take for the bugs to "ramp it up" again?
ReplyTrico Tips 44 Replies »
Posted by Martinlf on Jul 21, 2007 in the genus Tricorythodes
Last reply on Jan 4, 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 could be found on the Little Lehigh Flyshop website until Rod closed the shop. An internet search may provide images now. 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.
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?
There are 2 more topics.

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