"P. argus" adults emerge in the end of June and beginning of July and engage in flight into the beginning of August. In these butterflies, there is a sex difference in emergence, with males emerging four to nine days earlier than females. As colony size increases, "P. argus" are temporally recorded earlier in the year. Additionally, as colony size increases, female emergence happens over a greater range of time and there is a greater discrepancy between emergence of the males and emergence of the females.