Olive Tree is Second Non-Ash Species Found Vulnerable to Emerald Ash Borer

EAB larvae in olive stem

Last fall, researchers at Wright State University announced they had found that emerald ash borer can develop from larvae to adulthood on a species of olive tree. Today, that study is published online in the Journal of Economic Entomology. Their detailed report shows that 45 percent of the emerald ash borer (Agrilus planipennis) eggs that […]

How Fast Does Emerald Ash Borer Kill Trees in Our Forests?

Ash forest affected by emerald ash borer

By Laurel Haavik, Ph.D. Agrilus planipennis Fairmaire, a shiny green beetle from Asia commonly known as the emerald ash borer (EAB), has taken North America by storm. Assisted mostly by people, but also by its own wings, EAB is rapidly spreading across urban and forested areas alike. EAB-killed ash trees in urban areas are noticeable […]

Emerald Ash Borer May Become a Problem for Olive Growers

In October 2014, researchers at Wright State University discovered that an invasive insect called the emerald ash borer (EAB) was attacking white fringetrees (Chionanthus virginicus) in addition to ash trees. This was big news at the time. The EAB had already killed tens of millions of ash trees, and the fact that it could harm […]

Ash and Emerald Ash Borer: How Do Trees Defend Themselves from a Deadly Beetle?

Editor’s note: This is the first installment in the “Behind the Science” series by Laurel Haavik that peeks into the lives of scientists. See other posts in the series. By Laurel Haavik, Ph.D. You have probably heard about a tiny green beetle from Asia that is blazing across North America, leaving millions of ash trees […]

USDA to Release Russian Wasps Against the Emerald Ash Borer

With the emerald ash borer beetle devastating ash tree populations throughout the United States, solutions to help fight the insect are critical. Thanks in part to research from the University of Delaware and the USDA’s Agricultural Research Service, a host-specific parasitoid wasp from Russia — Spathius galinae — has been approved for release to help […]