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

Figure 5

Percent of counts reporting Regal Fritillary each year in main Regal range, 1977–2014, with linear regression trend line. This declined significantly in both periods analyzed (Table 3).