 In a given year, the number of generations differs based on location and weather conditions.In Canada, there are 1 or 2 generations, while in the United States, there are 2 to 4 per year.This species is abundant in warmer temperatures (such as Arkansas, US) during the late spring in May–June and early fall in September and October, while they are more abundant in cooler temperature (such as New York, US) during the summer in June and July.