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Photo#1323138
Mini Hilltopping Event 1  - Adela trigrapha - male

Mini Hilltopping Event 1 - Adela trigrapha - Male
Husum, Klickitat County, Washington, USA
May 11, 2016
Walking through a mixed coniferous and oak forest I stumbled across an amazing moth event referred to as hilltopping, I think. It happened on a mound where a cluster of Oregon White oaks had grown but had been felled and sprouts are now growing thickly. Flashing in the sunlight were tiny moths. I call them cowboy moths because they are always flashing their ropes (antennae) and stars and stripes. There were approximately 12-15 of them showing off. This open forest is located near a prairie/wetland remnant. Hope you can add some thoughts about hilltopping!

Images of this individual: tag all
Mini Hilltopping Event 1  - Adela trigrapha - male Mini Hilltopping Event 2  - Adela trigrapha - male Mini Hilltopping Event 3  - Adela trigrapha - male

Moved
Moved from ID Request.

Adela trigrapha (male)…
It's quite possible that a group of males may be displaying hill-topping behavior here. Males sometimes aggregate in their courtship behavior. See here for example.

See reference here.

 
Thanks John & Jane, Ross and Aaron....
It looks like we have three species of Adela at this location based on BG Identification:
*Adela trigrapha - Photo#1323138
*Adela flammeusella - Photo#1090354
*Adela septentrionella - Photo#1090343

One of the Fairy Moths

Aaron may be able to tell you which one

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