Yes, but the photos I have found on the web of both H. incongruana and H. argyroleuca have had more colour than that in Alison's photo. Are there specimens of these in ANIC as pale Alison's? It would be nice to have a key for distinguishing the Heliocosma species. I find them confusingly similar.
Yes, incongruana and H. argyroleuca are both variable and some are light. I haven't worked out any precise distinguishing features in the underlying patterns.