I previously posted photos that Dr. Ascher ID'd as P. lepidus from the same location, it's even possible this is the same individual, see: [https://www.inaturalist.org/observations/15807742]. There aren't that many photos of this species available - these show some decent detail and illustrate another host plant, so I thought them worthy of posting. On Oligoneuron rigidum (aka Solidago rigida) in my garden.