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> > Mystery Creek # 237

About "Mystery Creeks": I love small streams, but some of my favorite little trout streams are too small and too fragile to publicize here. If you recognize one of these, you already understand why I'm keeping it a secret. These are the kinds of places that lose a little bit of their charm if you see someone else's week-old footprint, and I don't want to do that to them.

Landscape & scenery photos from Mystery Creek # 237

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My nicest Cutthroat Trout yet, a beautiful 18-incher. I'll remember this fish forever. From Mystery Creek # 237 in Montana.
My nicest Cutthroat Trout yet, a beautiful 18-incher. I'll remember this fish forever.
StateMontana
Date TakenAug 29, 2018
Date AddedJun 13, 2019
AuthorTroutnut
CameraNIKON 1 AW1
 From Mystery Creek # 237 in Montana.
StateMontana
Date TakenAug 2, 2020
Date AddedAug 18, 2020
AuthorTroutnut
CameraNIKON 1 AW1
 From Mystery Creek # 237 in Montana.
StateMontana
Date TakenAug 2, 2020
Date AddedAug 18, 2020
AuthorTroutnut
CameraNIKON 1 AW1
 From Mystery Creek # 237 in Montana.
StateMontana
Date TakenAug 2, 2020
Date AddedAug 18, 2020
AuthorTroutnut
CameraNIKON 1 AW1
 From Mystery Creek # 237 in Montana.
StateMontana
Date TakenAug 2, 2020
Date AddedAug 18, 2020
AuthorTroutnut
CameraNIKON 1 AW1
Page:12345

Closeup insects from Mystery Creek # 237

Male Cinygmula reticulata (Western Ginger Quill) Mayfly SpinnerMale Cinygmula reticulata (Western Ginger Quill) Mayfly Spinner View 7 PicturesThe lengths of the wing and body, measured with a caliper, are both 8 mm.

Keys in Needham's 1935 Biology of Mayflies point to either Cinygmula reticulata or Cinygmula gartrelli. IT seems to have “cross veins in costal half of fore wing only, slightly margined with brown” and “wings tinged withamber at base and along costal margin of both wings” (gartrelli) as opposed to “all cross veins of both wings faintly but broadly margined with pale smoky” and “wings entirely amber-tinged” (although there is a slight amber tinge throughout, just more pronounced in places) as in reticulata. However, wing length reported for reticulata (9 mm) is closer to this specimen than gartrelli (10 mm). Ventral (Ventral: Toward or on the bottom.) median marks are supposed to be “traces” for reticulata and “present” for gartrelli. Descriptions for both species involve semi-hyaline (Hyaline: Highly transparent, or glassy; usually refers to insect wings, especially those of mayfly spinners.) anterior (Anterior: Toward the front of an organism's body. The phrase "anterior to" means "in front of.") abdominal segments not present on my specimens. Distribution records suggest reticulate lives nearby, so I'm going with that, but I can't confidently rule out gartrelli.
Collected August 1, 2020 from Mystery Creek #237 in Montana
Added to Troutnut.com by Troutnut on August 18, 2020

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