Reading the words “bed bug” in a sentence is enough to make most people's skin crawl! Bed bugs aren't a pleasant topic to discuss, but if you plan on staying at a hotel, hostel, or motel this summer, learning about bed bugs is a “must!”
June 4-10 was Bed Bug Awareness Week, but it was also California Invasive Species Action Week, so here at UC IPM, we were busy posting every day about invasive pests. Bed bugs aren't considered an invasive pest, although bed...
This week, we put the spotlight on invasive species and how these non-native plants, animals, and pathogens damage California's economy and environment.
You Can Make a Difference
Shot hole borers and the diseases they carry, and Asian citrus psyllid and huanglongbing disease are serious invasive pests of concern. Do your part to help prevent their spread. If you go camping this summer, don't move firewood from your home to the campground. For backyard citrus growers, find out if you are in a quarantine zone for Asian citruspsyllid. You can make a difference. Read the posts above to find out...
The red imported fire ant, or RIFA for short, is no ordinary red ant. This invasive pest lives up to its name, delivering a sting that causes a burning sensation when its venom is injected into the skin.
People sometimes confuse RIFA with the native southern fire ant. Both can become very agitated when their nest is disturbed but RIFA are more likely to attack. RIFA can bite and sting its victim repeatedly, and its sting is more serious, causing a burning and itching sensation. This is followed by the formation of a white pustule, which can take several weeks to disappear. If not kept clean, the pustules can become infected and may leave permanent scarring. A small...
Shot hole borers are tiny insects the size of a sesame seed that don't look particularly harmful, but don't let their diminutive size fool you. Two of these borers are invasive—the polyphagous shot hole borer and the Kuroshio shot hole borer. They carry pathogens and are spreading them throughout southern California. Together, the borers and the fungi are a deadly combination that are killing many trees. Trees affected include avocado, sycamore, white alder, box elder, cottonwood, and willow.
The two shot hole borers are nearly identical in appearance, and both have a symbiotic relationship with several pathogenic fungi. The female borers lay eggs which introduces fungi into trees. The fungi grow and provide food for...
When people think of parasites, often what comes to mind are blood-sucking insects like bed bugs, head lice, and fleas or other bodily invaders on or in humans and other animals. But plants can have parasites too. Most of us are familiar with mistletoe but there is another parasitic plant you may not have heard about: dodder.
There are several species of dodder native to California but they are not as problematic as a particularly invasive species, Japanese dodder, Cuscuta...