The invasive pest spotlight focuses on emerging or potential invasive pests in California. In this issue we are covering the emerald ash borer.
Emerald Ash Borer Facts
The emerald ash borer is a small (roughly 3/8 to 5/8 inches long) beetle with metallic green wing covers and a coppery red or purple abdomen. While there are other metallic wood-boring beetles, the emerald ash borer's body is longer and more cylindrical than others. Adults feed on the edges of leaves and lay eggs under tree bark flaps and in bark crevices. Once the eggs hatch, the larvae burrow into the tree to feed, creating S-shaped galleries in the wood. This disrupts the flow of nutrients through the tree and causes branch...
- Author: Belinda J. Messenger-Sikes
What is that weird wormlike thing in your garden? A slug? An earthworm? It may be neither—it it might be a land planarian. Land planaria are also called terrestrial flatworms and hammerhead worms. They are often colorful, such as the blue garden flatworm (Caenoplana coerulea) or patterned with stripes, like the shovel-headed garden worm (Bipalium kewense).
Land planaria are generalist predators of earthworms, slugs, and other mollusks. They capture prey by wrapping their bodies around it and engulfing the prey with mucous. Planaria mouths are not at the end of their body like most animals, but on the underside near the middle of their body. Unlike slugs, land planaria do not have tentacles (such...
- Author: Belinda J. Messenger-Sikes
The jumping worm, Amynthas agrestis, is an invasive earthworm capable of harming native forests that has been recently reported in some areas of California. This pest devours leaf litter and other organic matter, changing soil texture and nutrient availability to a point where some plants may be unable to survive. Its feeding can lead to a decline in diversity and population of native plants and other organisms within forests.
Although these worms are native to eastern Asia, they have been detected in dozens of states; including Massachusetts, New York, Wisconsin, and Minnesota. Jumping worms have since moved west to Washington...
- Author: Lauren Fordyce
Lately you may have seen some large, leggy insects bumbling around on your home, bouncing off walls and ceilings. What are these?
While many people call them “mosquito eaters” or “mosquito hawks,” they are actually crane flies. And unfortunately, they do not eat mosquitoes. Many reports claim that they bite or sting, and this is also false. The adults are harmless and many species don't even have mouthparts to feed at all! However, their larvae can be pests of lawns and turfgrass.
Larvae are to 1-1/2 inches long, brown, and wormlike with very tough skin. They may resemble white grubs, but crane fly larvae do not have legs. The majority of lawn damage from crane flies is...
In honor of Lyme Disease Awareness Month and in response to some misinformation about ticks on social media recently, we'd like to share some tick and Lyme disease facts.
- Ticks can spread several diseases to humans and pets, but Lyme disease is the most common. In California, Lyme disease is carried by the western blacklegged tick which occurs throughout the state.
- Lyme disease has been reported in most California counties, but some areas pose higher risks than others.
- You can
