checked against the genitalia images from cornell, there's no mistake as to the ID I originally posted. P. fervidaria doesn't have an AM line and the PM line is usually not complete. Summer P. phlogosaria are more yellow and have less burn marks.

Great, I remember how confusing this genus is now. That is a good example of what to look for, when placing into this genus.
Eventually, I would like to make a visual guide to the genus for other editors to follow, showing each of the versions of each species and what to look for on them.
What do you think about the "purple" one? -- see here

that purple one is very unusual, too bad it wasn't collected.
I had collected the Canadian Plagodis because I thought it looked odd. The asymmetrical furcae are a summer feature of P. phlogosaria, the first brood has symmetrical ones. I wondered about this when I dissected it, and Tony Thomas sent me a copy of the paper regarding this 2nd brood characteristic. (maybe it's morphing into another species!)