Blog & Latest Updates
Fly Fishing Articles
Insects by Common Name
> > 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
My nicest Cutthroat Trout yet, a beautiful 18-incher. I'll remember this fish forever.
Closeup insects from Mystery Creek # 237
Male 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.
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
Added to Troutnut.com by Troutnut on August 18, 2020
Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner
View 7 Pictures
View 7 PicturesCollected August 1, 2020 from Mystery Creek #237 in Montana
Added to Troutnut.com by Troutnut on August 18, 2020
Added to Troutnut.com by Troutnut on August 18, 2020
Female Suwallia pallidula (Sallfly) Stonefly Adult
View 12 PicturesA large number of photos from the microscope allowed a fairly confident ID on this one, which not coincidentally matches very well a previous specimen of Suwallia pallidula that I collected in Washington.
View 12 PicturesA large number of photos from the microscope allowed a fairly confident ID on this one, which not coincidentally matches very well a previous specimen of Suwallia pallidula that I collected in Washington.Collected August 1, 2020 from Mystery Creek #237 in Montana
Added to Troutnut.com by Troutnut on August 18, 2020
Added to Troutnut.com by Troutnut on August 18, 2020
Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner
View 6 Pictures
View 6 PicturesCollected August 1, 2020 from Mystery Creek #237 in Montana
Added to Troutnut.com by Troutnut on August 18, 2020
Added to Troutnut.com by Troutnut on August 18, 2020
Start a Discussion of Mystery Creek # 237:
Top 10 Fly Hatches
Baetis
Baetidae
Ephemerellidae
Hexagenia limbata
Chironomidae
Heptageniidae
Ephemerella subvaria
Ephemerella
Isonychia
HydropsychidaeTop Gift Shop Designs
I outfish my daddy!
Electric blue Hendrickson dun.
I love buggers. Big, green, wooly ones.
I outfish my husband!
Be the trout. Eat mayflies.
Top Insect Specimens
Baetisca obesa Mayfly Nymph
Corydalus Hellgrammite Larva
Neophylax Caddisfly Adult
Rhyacophila fuscula Caddisfly Larva
Pteronarcys biloba Stonefly NymphMiscellaneous Sites
Troutnut.com is copyright © 2004-2024 Jason
Neuswanger (email Jason). See my FAQ for information about use of my images.
privacy policy
privacy policy