Favoritos de naturecandids

This appears to be the Eurasian species Acentria ephemerella, apparently introduced to North America from Eurasia in the 1920s with water plants and/or later as a biological control agent of Potomogeton and Elodea pondweed species.

Lamp sheet close to Cave Lake, large numbers of this species appeared later in the evening.

A single point is shown on the MPG page here for California https://mothphotographersgroup.msstate.edu/species.php?hodges=5299 which looks to be a little south of this location but still in the Warner Mountains.

The pale buff hindwing with some darker coppery colored scales, and entirely pale buff thorax without reddish tuft or marking would seem to indicate this is Oligia rampartensis and not O. violacea.

This might be the nicest pug moth I ever found in California! The scalloped white subterminal line would seem to indicate this is Eupithecia stellata and not E. bowmani (latter unrecorded in California so far as I can tell).

Distribution map of E. stellata at MPG shows single point in California http://mothphotographersgroup.msstate.edu/species.php?hodges=7564