Observation notes: At Senecio sp. blossom in alpine meadow in a forest clearing. This area was the site of several published E. gillettii studies conducted by E. Williams in the 1980's. He contacted me in 2005 and told me about his work and the location of the population(s) he had investigated. He was not sure that the species was still extant there. I surveyed butterflies at his location 1 day in July each year beginning in 2005. In 7 years this was the first individual I observed. If it had been a female or a fresher specimen I would not have collected it, but since it was a worn male I assumed that if it was going to find a mate and reproduce it had probably done so by now so retained the specimen as a voucher specimen due to the significance of the site. The specimen resides in the Orma J. Smith Museum of Natural History at The College of Idaho, Caldwell, ID.