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

Figure 8

Total Regal individuals divided by number of counts reporting Regal present, 1977–2014, with regression trend line and three-year running average. The three counts in the highest order of magnitude abundance category (Table 4) were held in 1993–99 (but in no year were all three counts held) with one also reporting in 2002. This was weakly positive but far from significant in 1977–2014; the decline was significant in 1991–2014 (Table 3).