Figure 5
From: Human-mediated dispersal drives the spread of the spotted lanternfly (Lycorma delicatula)
Maps showing observed county-level occurrence of spotted lanternfly (Lycorma delicatula) by year between 2014 and 2021 (red polygons) overlaid on Maxent model estimates of spotted lanternfly probability of occurrence. Probability of SLF occurrence ranges between low (< 0.01, dark gray) and high (> 0.8, light gray) values. The small multiple maps were produced using the ‘ggplot2’ (ver. 3.3.6; https://cran.r-project.org/web/packages/ggplot2/index.html) and ‘ggmap’ (ver. 3.0.0.903; https://cran.r-project.org/web/packages/ggmap/index.html) packages in R.
