Status and Trend of Regal Fritillary (Speyeria idalia) (Lepidoptera: Nymphalidae) in the 4th of July Butterfly Count Program in 1977–2014

Figure 6

Percent of counts reporting Regal Fritillary each year in core Regal range, 1977–2014, with regression trend line. This decline was significant in 1977–2014 but not in 1991–2014 (Table 3).