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The Specimen

Hesperophylax designatus (Silver Striped Sedge) Caddisfly AdultHesperophylax designatus (Silver Striped Sedge) Caddisfly Adult View 1 Pictures
Collected September 5, 2011 from the Touchet River in Washington
Added to Troutnut.com by on September 14, 2011

The Discussion

Post Reply
JpMcKenzieDecember 16th, 2017, 9:12 am
Canada Québec

Posts: 2		Hey! How would you tell this is a female? thank you!
Jean-Philip, Mckenzie river Fly Fishing Lodge guide, Labrador.
Adventure & Entomology passionate!
CrenoDecember 16th, 2017, 4:35 pm
Grants Pass, OR

Posts: 305		probably cannot be sure from this pic only. If you could clearly see the palps, a male limnephilid has 3 palpal segments while the female has 5. I cannot see the palpal segments clearly in this specimen. Since Bob Newell took this pic it is likely he kept the specimen and could look at it with a microscope or other magnification. The females of Hesperophylax are easily separated to species based on their genitalia. Alot easier than the males.

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