A “Bright Scintillant” or Subspecies of “Rounded Metalmark”?

My best printed source of butterfly identification is the book A Swift Guide to Butterflies of Mexico and Central America by Jeffrey Glassberg. In that book this butterfly is labeled as a “Bright Scintillant,” but rather than giving a scientific name, it just says it is one of the “Calephelis species.” The butterfly website I volunteer for (butterfliesandmoths.org) does not have Bright Scintillant nor does its backup website, butterfliesofamerica.com, therefore I and others have put this one in “Rounded Metalmark, Calephelis peritalis, a part of the “Calephelis species” as the book says. But according to the Glasberg book, the white dots on the upper edges of the the forward wing make this one different from the Rounded Metalmark in the book. I do not know who is the final authority on butterfly names, but hope this one is at least made a subspecies of the Rounded Metalmark! And identification of the myriad of butterflies in Costa Rica will always have its challenges like this!  🙂   Here’s two shots of the latest I have seen of the above butterfly in my garden . . .

Bright Scintillant or Rounded Metalmark, Atenas, Costa Rica

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