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Urban Warming Drives Insect Pest Abundance on Street Trees

Figure 2

Parthenolecanium quercifex abundance across the Raleigh, NC urban heat island.

Abundance of P. quercifex on hot and cold urban trees. Bars represent the mean (±SEM) abundance of (A) 2nd instars in winter 2011 (n = 40); (B) 1st instars in June 2011 (n = 11); and (C) ovisacs in spring 2011 (n = 11) on 30.5-cm terminal branches of hot (red) and cold (blue) urban trees in Raleigh, NC.

Figure 2

doi: https://doi.org/10.1371/journal.pone.0059687.g002