Department of Entomology

If you had plans to visit the Crystal Lake recreation area in the San Gabriel Mountains and Angeles National Forest this week, you should change them. Officials closed the area Tuesday to spray insecticide on pine trees to protect them...

Study reveals a previously unknown threat: non-native crop viruses are infecting and jeopardizing the health of wild desert plants.

Friends, Romans, arthropods, lend us your ears! For those curious about insects – their behavior, love lives, the threat or lack thereof they pose to humans – there is a new podcast: Can I Bug You? Recorded on the UC...

Four decades ago, California went to war against an enemy that wasn’t human. The adversary was the Mediterranean fruit fly, an invasive pest that threatened to destroy California’s agricultural economy. To fight the fly, the state launched controversial aerial pesticide...

Subterranean termites in the genus Reticulitermes are common pests in North America, responsible for significant damage to wooden structures. The scientific literature maintains that the western United States is home to two native species of termites: Reticulitermes hesperus in more...

If ever there were not enough reasons for tree nut farmers to be diligent about winter sanitation, they now have one more with the discovery of a new invasive beetle that overwinters in mummy nuts. This new beetle – Carpophilus...

France’s top export this year isn’t creamy camembert or moody arthouse cinema. No, people will remember France in 2023 for exporting the only home invader so reviled that many would rather see their belongings go up in flames than deal...

On a brisk morning last month, the deputy mayor of Paris, Emmanuel Grégoire, stood in front of a French TV camera with a serious look on his face and said: “No one is safe.” He wasn’t talking about the threat...