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Latest updates, page 52

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Updates from July 27, 2011

Closeup insects by Bnewell from the Touchet River in Washington

Male Acentrella turbida (Tiny Blue-Winged Olive) Mayfly Spinner

View 3 PicturesI would not like to have to match this hatch. These are the smallest mayflies I have ever seen. I used to think Caenis was the smallest adult mayfly in the west but these guys are about 4mm long. The male eyes are two toned, brown above and olive below. The abdomen is dark brown interspersed with light brown. The abdomen is clear for the anterior (Anterior: Toward the front of an organism's body. The phrase "anterior to" means "in front of.") 2/3rd and the remainder is white. The tails are twice as long as the insect. There is only one pair of wings.

Collected July 27, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 27, 2011

Female Acentrella turbida (Tiny Blue-Winged Olive) Mayfly Spinner

View 1 PicturesHere is the female spinner of the tiny Acentrella turbida. You can see the coloration is quite different from the male.

Collected July 27, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 29, 2011

Hydropsychidae Caddisfly Adult

View 2 PicturesThese specimens are either Cheumatopsyche or Hydropsyche. They escaped before I could catch them.I suspect, based on size, they are Hydropsyche, they are about 1/4 inch in length. Both H. occidentalis and H. californica are common in the Touchet River.

Collected July 27, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 29, 2011

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Updates from July 26, 2011

Closeup insects by Bnewell from the Touchet River in Washington

Female Epeorus longimanus (Slate Brown Dun) Mayfly Spinner

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Collected July 26, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 26, 2011

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Updates from July 24, 2011

Closeup insects by Bnewell from the Touchet River in Washington

Female Epeorus longimanus (Slate Brown Dun) Mayfly Spinner

View 1 PicturesI associated this female with a male I collected one night later. For a great and informative discussion of all Epeorus species and other mayflies be sure and read, WESTERN MAYFLY HATCHES by R. Hafele and D. Hughes. They rate all of the western mayflies and they rate the hatch of this genus a 25 out of a possible 45 points based on several rating criterion. They provide insect photos, possible fly patterns and fly presentations. This is a great book.

Collected July 24, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 25, 2011

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Grayling & bugs on the upper Gulkana River

By Troutnut on July 17th, 2011

We went sightseeing in the Alaska Range on Sunday and made a quick stop near where the Gulkana River crosses the Denali Highway. Wader issues prevented us from venturing very far, so we were confined to a long stretch of easily accessed pocket water containing about two pockets, which held one nice grayling for each of us. Once again, Lena caught the first fish, giving my wife her chance to debut as a fashion model for the Troutnut store:

(Any wives reading this can buy "I outfish my husband" stuff here.)

I also collected some nymphs and a beautiful Drunella doddsii dun to photograph.

Photos by Troutnut from the Gulkana River and Miscellaneous Alaska in Alaska

Rainbow Mountain in the Alaska Range, one of the prettiest pieces of the Richardson Highway. From Richardson Highway in Alaska.

I think this is Lena's nicest grayling yet, around 16 inches. From the Gulkana River in Alaska.

The Delta River and the Alaska Range in the distance. From Richardson Highway in Alaska.

A moose feeds in wetlands in the Delta River Valley. From Richardson Highway in Alaska.

Underwater photos by Troutnut from the Gulkana River in Alaska

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In this picture: True Fly Family Chironomidae (Midges).

StateAlaska

LocationGulkana River

Date TakenJul 17, 2011

Date AddedJul 20, 2011

AuthorTroutnut

CameraCanon PowerShot D10

Closeup insects by Troutnut from the Gulkana River in Alaska

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Updates from July 15, 2011

Closeup insects by Bnewell from the Touchet River in Washington

Rhithrogena robusta Mayfly Spinner

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Collected July 15, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 15, 2011

Male Rhithrogena robusta Mayfly Spinner

View 3 PicturesThese specimens were collected from a mating swarm from the east branch of the North Fork of the Touchet River, upstream from the Bluewood Ski Area turn.It was a sunny warm day, mating swarm as 4-8 ft. above this small stream. Four male spinners were collected.Stream photos were taken.

Collected July 15, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 15, 2011

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Jargon Defined:

Abdomen: The rear and usually the longest (ten-segmented in mayflies) portion of an insect's body, to which the tails are attached.

Anterior: Toward the front of an organism's body. The phrase "anterior to" means "in front of."

Dun: Mayflies have two adult stages. They first emerge from the water as duns (scientifically known as the subimago stage). They then molt into the spinner (imago) stage, in which they mate and die. Sometimes the word "dun" is confusingly used to refer to a brownish gray color in fly tying materials.

Nymphs: The juvenile, underwater stages of mayflies, stoneflies, dragonflies, and damselflies and other aquatic insects whose juvenile stages are covered by hard exoskeletons. The word can also refer to the fishing flies which imitate these creatures, in which case it is used as a blanket term for flies imitating any underwater stage of an invertebrate (except for crayfish and leeches).

Spinner: There are two winged stages of adult mayflies. They emerge from the water as duns, molt on land (usually) into their fully mature stage, spinners. As spinners, they mate, lay eggs, and die.