What am I looking at?

[sgrim]

I took this pic through a window yesterday afternoon and am having trouble identifying it. I see two 2 tails but could be convinced that the one on the left of the pic is really 2 stacked up together. The body looks cream in the picture but seemed more like a translucent gray up close. Is this a sulphur?

I had to zip the file to get it small enough to post.

 

[afishinado]

I resized and posted your pic below.

My guess would be Epeorus vitreus spinner or Leucrocuta hebe. Some call them sulphurs but they are not dorotheas or invarias with 3 tails, they have two long tails.

E. Vitreus are believed to have two broods, so they may be present in the late summer or early fall and the hebes hatch in the fall.

Here is a great article about sulphurs posted on here a long time ago by K-fish Andy, and written by Paul Weamer > Sulphurs

 

[sgrim]

Great, Thank you for the ID and the link to that article.