This is the 2nd instar P. quercifex abundance across the Raleigh, NC urban heat island. Dots represent relative 2nd instar P. quercifex abundance per 30.5 cm stem at each hot (red) and cold (blue) site (n = 40) in winter 2011. The image is a thermal map of the Raleigh, NC urban heat island created from a Landsat image acquired on August 18, 2007.
Meineke EK, Dunn RR, Sexton JO, Frank SD (2013) Urban Warming Drives Insect Pest Abundance on Street Trees. PLoS ONE 8(3): e59687. doi:10.1371/journal.pone.0059687