City forester Joe O'Neill points out the tunneling pattern of Emerald Ash Borer larva on an infested tree on north Sheridan Road in Highland Park. I David Banks~for Sun-Times Media
City forester Joe O'Neill points out the tunneling pattern of Emerald Ash Borer larva on an infested tree on north Sheridan Road in Highland Park. I David Banks~for Sun-Times Media
Woodpeckers hungry for Emerald Ash Borer larva created a checkerboard pattern on this ash tree, signalling the presence of the bug. I David Banks~for Sun-Times Media
City forester Joe O'Neill points to signs of Emerald Ash Borer infestation on a parkway tree on north Sheridan Road. "Right now, some ash trees in Highland Park show it badly and others do not," he said. I David Banks~for Sun-Times Media
City Forester Joe O'Neill has increased tree surveys to twice a year since the first case of Emerald Ash Borer was confirmed in 2011. I David Banks~for Sun-Times Media
A close-up of the tunneling pattern created by Emerald Ash Borer larva on a parkway tree on north Sheridan Road. I David Banks~for Sun-Times Media
A close-up of the tunneling pattern created by Emerald Ash Borer larva on a parkway tree on north Sheridan Road. I David Banks~for Sun-Times Media
Tree damage of the Emerald Ash Borer Larvae in Highland Park, Monday, February 18, 2013 I David Banks~for Sun-Times Media
City Forester Joe O’Neill knew what he’d find when he peeled off a patch of bark on an ash tree on the 2600 block of Sheridan Road. The telltale signs of emerald ash borer infestation could be seen in the checkerboard markings left by woodpeckers …
