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Animal Phylum Arthropoda (Arthropods)

Pictures Below
Arthropods include just about everything trout eat except for minnows, worms, and leeches.

Pictures of 1003 Arthropod Specimens:

Specimen Page:1234...101
Neophylax (Autumn Mottled Sedges) Caddisfly AdultNeophylax (Autumn Mottled Sedges) Caddisfly Adult View 20 PicturesThis large caddisfly looks really neat close-up.
Collected September 19, 2006 from Mystery Creek #43 in New York
Added to Troutnut.com by Troutnut on October 4, 2006
Male Baetis (Blue-Winged Olives) Mayfly DunMale Baetis (Blue-Winged Olives) Mayfly Dun View 14 PicturesThis dun molted most of the way into a spinner (though the wings got stuck) the evening after I photographed it, so I took some more photos of the spinner.

I found a female nearby, probably of the same species.
Collected September 19, 2006 from Mystery Creek #43 in New York
Added to Troutnut.com by Troutnut on October 4, 2006
Specimen Page:1234...101

79 Streamside Pictures of Arthropods:

Streamside Photo Page:1234...9
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
Caddis on Catskill cobble.  In this picture: Insect Order Trichoptera (Caddisflies). From the Beaverkill River in New York.
Caddis on Catskill cobble.

In this picture: Insect Order Trichoptera (Caddisflies).
Date TakenApr 16, 2005
Date AddedFeb 2, 2006
AuthorTroutnut
These caddisflies were thick over the water in the evening on a cold, clear northwoods lake.  They were in many places on the lake, all closer to the shady shore, which also was the shore most sheltered from the wind.  I'm not sure which of those features attracted them.  In this picture: Caddisfly Genus Nectopsyche (White Millers). From Lake Owen in Wisconsin.
These caddisflies were thick over the water in the evening on a cold, clear northwoods lake. They were in many places on the lake, all closer to the shady shore, which also was the shore most sheltered from the wind. I'm not sure which of those features attracted them.

In this picture: Caddisfly Genus Nectopsyche (White Millers).
LocationLake Owen
Date TakenJun 10, 2006
Date AddedJun 30, 2006
AuthorTroutnut
Streamside Photo Page:1234...9

122 Underwater Pictures of Arthropods:

Underwater Photo Page:1234...13
Hundreds of cased caddisfly larvae live on this log in a small brook trout stream.  In this picture: Insect Order Trichoptera (Caddisflies). From Eighteenmile Creek in Wisconsin.
Hundreds of cased caddisfly larvae live on this log in a small brook trout stream.

In this picture: Insect Order Trichoptera (Caddisflies).
Date TakenApr 14, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Several Baetidae nymphs line up on a rock.  In this picture: Mayfly Family Baetidae (Blue-Winged Olives). From Mongaup Creek in New York.
Several Baetidae nymphs line up on a rock.

In this picture: Mayfly Family Baetidae (Blue-Winged Olives).
Date TakenApr 19, 2006
Date AddedApr 22, 2006
AuthorTroutnut
CameraPENTAX Optio WPi
This is my favorite underwater picture so far. It shows a bunch of Simuliidae (black fly) larvae clinging to a rock and swinging in the fast current. There are also at least four visible mayfly nymphs, probably in the family Baetidae.  In this picture: Mayfly Family Baetidae (Blue-Winged Olives) and True Fly Family Simuliidae (Black Flies). From Eighteenmile Creek in Wisconsin.
This is my favorite underwater picture so far. It shows a bunch of Simuliidae (black fly) larvae clinging to a rock and swinging in the fast current. There are also at least four visible mayfly nymphs, probably in the family Baetidae.

In this picture: Mayfly Family Baetidae (Blue-Winged Olives) and True Fly Family Simuliidae (Black Flies).
Date TakenMar 19, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Underwater Photo Page:1234...13

Recent Discussions of Arthropoda

Polycentropodidae or? 14 Replies »
Posted by LowBudget on Oct 1, 2013 in the family Polycentropodidae
Last reply on Jul 24, 2014 by Crepuscular
The first image is of a live caddis. It was collected from Trout Creek which is in the Delaware River watershed in upstate NY. The background is 1/4 inch ruled graph paper which is under the Petrie dish holding the caddis with water.

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


The second shows small silk nets found on rocks in the same stream during the same sampling.


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



I've been working all of my ID books including "Freshwater Macroinvertebrates of Northeastern North America" by Peckarsky.

The upper lip does not seem to have the T shape of a Fingernet caddis. It does have the heavy mandible with a brush of Polycentropodidae.

But, I'm not completely satisfied.

Anyone have thoughts on this?

Ed
ReplyArctopsyche Grandis 6 Replies »
Posted by Epeorus on Jul 2, 2014 in the genus Arctopsyche
Last reply on Jul 6, 2014 by Entoman
A while ago there was some discussion of this bug in Colorado. I first came across this beast in early July 2011 on the Eagle River, just downstream of Edwards, Co. Met him again this week on the Eagle. It's quite the blast - big bugs and big trout. Especially the ones rising with abandon in the fast water in the middle of the day.

Funny thing is we don't seem to see these guys most years. The commonality between 2011 and this year is an extended runoff leading to cold and high - though clear water in early July. I wonder if they normally hatch during the peak of the runoff when no one is on the water.

I remember people commenting about these caddis allegedly being in parts of Colorado. The hatches the last two days on the Eagle and what I saw in 2011 would add some level of credence to that belief.

A size 10 (on a Partridge L3A) sponge body caddis with a dark gray body, and a size 10 Lafontaine sparkle emerger with a gray body and a clear shroud were the ticket.
ReplySo is Ep Infrequens now known as Ep Dorothea? 20 Replies »
Posted by Wbranch on Feb 17, 2008 in the species Ephemerella dorothea infrequens
Last reply on Jul 1, 2014 by Crepuscular
These mayflies look more like the Sulfurs I see on the Delaware system than the PMD's I see in Montana. The Montana mayfly has a distinct yellow leading edge to an overall light dun gray wing and the abdomen and thorax have a more light greenish/yellow cloration so how is it that Infrequens is now known as Ep Dorothea Dorothea?
ReplyPredicting a hatch? 2 Replies »
Posted by U2ill on Apr 2, 2008 in the order Ephemeroptera
Last reply on Jun 24, 2014 by TNEAL
All,

Is it possible to predict a hatch (whether mayfly, caddis, stonefly, etc) based off of water, air, and weather data? So if I know streamflow, water temp, air temp, wind, cloudiness, etc...and I know what insects are on a stream...is that enough data to make a prediction like "There would be a good likelihood of a caddis hatch this afternoon"?
ReplyMoved from genus level to N. albida
Posted by Entoman on Jun 15, 2014 in the species Nectopsyche albida
It is my understanding that wing maculation is quite distinctive and consistent in this genus thus allowing species identification using this character. This specimen has been at the genus level for many years and somehow slipped through the cracks.;)
Reply
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