Eric Metzler points out: "...it looks a lot like Pygarctia murina, but once spread, the differences become apparent. The color of the hindwing is different as is the shape of the hindwing. It appears to be undescribed, genus either Pygarctia or Eucheates." Thus it is likely that we are dealing here with a species complex to be elaborated by further investigation. This applies to the specimen photographed by Bob Barber and perhaps to others.
images copyright Bob Barber