- Author: Lauren Fordyce
While preparing your garden for planting this spring, you may have found white grubs in the soil. Discovering these fairly large, white grubs can be alarming, but they usually won't cause significant plant damage.
Grubs are the soil-dwelling larvae of beetles in the Scarabaeidae family, also simply called scarabs. They are generally curled in a C-shape with whitish bodies and 6 legs. Grubs of some species may be less than 0.5 inch long, while other species may be up to 2 inches. Some grubs feed on living plant material while others do not.
Masked chafer beetle grubs are often what people find in garden beds in California. If you find large grubs in compost, those are likely the larvae of the green fruit beetle (also commonly called figeater beetle and green fig beetle). Japanese beetles are not usually present in California, but there are a few small hot spots under eradication efforts by the California Department of Food and Agriculture.
In most cases, the presence of grubs does not require pesticide treatment and populations of 6 or less per square foot won't cause significant damage. If you notice them in your garden beds, they can be hand-picked and killed. Some may choose to feed them to their backyard chickens or leave them out for wild birds. Beneficial nematodes can be applied to control grub infestations.
To learn more about common white grubs, visit https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=56797
- Author: Kathy Keatley Garvey
It's the cover of their final album, "Abbey Road," released Sept. 26, 1969.
All the Beatles, except Harrison, are wearing designer suits. And all, except McCartney, are wearing shoes. He is barefoot. Reportedly his newly purchased shoes hurt his feet, so he kicked them off.
Enter the UC Davis Entomology Graduate Student Association (EGSA) and its longtime best-selling T-shirt, "The Beetles," of four beetles crossing Abbey Road. Beneath each image is the family name: Phengogidae, Curculionidae, Cerambycidae and Scarabaeidae. Think glowworm beetles, snout beetles, long-horned beetles and scarab beetles.
Beetles belong to the order Coleoptera, the largest of all the insect orders, constituting some 400,000 described species, or about 40 percent of all described species of insects.
If you look closely, these UC Davis beetles are all wearing clothes--maybe designer clothes designed just for them? Three are barefoot, and one, the long-horned beetle, is wearing shoes. EGSA records don't indicate who designed "The Beetles," but it's a keeper. It never fails to draw smiles.
"The Beetles" is one of the many shirts that EGSA sells as part of its fundraising projects. The T-shirts can be viewed and ordered online at https://mkt.com/UCDavisEntGrad/.
EGSA president Mia Lippey, a doctoral student in the laboratories of UC Davis distinguished professor Jay Rosenheim and assistant professor Emily Meineke, says that currently, the designs offered are:
- The Beetles (in black or red)
- Entomo Gothic (a play on the American Gothic, in grey)
- Whip Scorpion (in lavender and black)
- Bee-Haw (in black)
- They See Me Rollin' (dung beetles rolling a poop, in heather blue)
- Et in Terra (dark green)
- Entomophagy (in blue and green)
All T-shirts come in sizes from XS to XXL.
One of the newer designs is "Bee Haw," of a honey bee disguised as a cowgirl, complete with hat and rope. The entomophagy ("eating insects") T-shirts are also "in," as are those that whip and roll--whip scorpions and dung beetles.
If you love The Beatles, The Beetles, and Abbey Road--or just all insects--and want to help out the entomology graduate students, insect-themed T-shirts are the way to go. Insects rule the world. A recent National Geographic article related that insects evolved 400 million years ago and today "there are about 10 quintillion on Earth...at least 850,000 known insects exist worldwide."
And most of them are beetles...
- Author: Anne Schellman
Beetles are the most plentiful of all insects on the planet, so it's understandable to get a few of them confused. Let's compare photos and other details about each of these beetles, and also mention the green June beetle, a beetle that is commonly mistaken for the Japanese beetle.
Japanese Beetles
Japanese beetles do not have an established population in California. The California Department of Food and Agriculture* (CDFA) maintains traps for detecting this pest throughout the state. When Japanese beetles are found in California, they are targeted for eradication (complete elimination). Read more about this invasive species on the UC IPM website at https://ipm.ucanr.edu/Invasive-and-Exotic-Pests/Japanese-Beetle/
Green Fruit Beetles
Green fruit beetles are a dull green color and much larger than Japanese beetles. You may notice them in late spring and summer as they zoom around your garden. Fortunately, they are rarely a pest. https://ipm.ucanr.edu/PMG/GARDEN/FRUIT/PESTS/grfruitbeetle.html
Rose Chafer Beetles
The rose chafer beetle resembles the hoplia beetle, however, this pest is not found in California. You can read more about these beetles on this informational page from University of Minnesota https://extension.umn.edu/yard-and-garden-insects/rose-chafers
Hoplia Beetles
Hoplia beetles are small, brown, and their undersides look like they've been dusted in gold. If you hold one in your hand, they will “play dead” and not move, making it easy to examine them.
*it's important that we help prevent invasive pests from taking hold in our communities and threatening agricultural crops. You can help by saying "yes" when asked if the Agricultural Commissioner's Office can place traps in your landscape.
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- Author: Kathy Keatley Garvey
And it was all about the beetles: "Beetlemania."
Some 500 visitors browsed the displays at the Bohart Museum of Entomology open house, chatted with scientists, photographed the specimens, engaged in arts and crafts, and then headed over to the petting zoo to introduce themselves to the Madagascar hissing cockroaches and stick insects.
The event took place from 1 to 4 p.m. in the Bohart Museum's headquarters in Room 1124 of the Academic Surge Building, 455 Crocker Lane. Bohart personnel greeted the guests: Lynn Kimsey, director of the Bohart Museum; Tabatha Yang, education and outreach coordinator; Brennen Dyer, collections manager; Brittany Kohler, research associate; Jeff Smith, curator of the Lepidoptera collection; and Greg Kareofelas, Lepidoptera host assistant.
- Beetles from Belize: Professor Fran Keller of Folsom Lake College, a Bohart Museum scientist, and her assistant, Iris Bright, a graduate student in the Jason Bond lab.
- Carabid beetles: Kipling "Kip" Will, associate professor with the UC Berkeley Department of Environmental Science, Policy and Management
- Burying beetles: Tracie Hayes, a doctoral candidate and burying beetle researcher in the laboratory of Professor Louie Yang, UC Davis Department of Entomology and Nematology. (She presented a video she created, "A Clearance of Death on Behalf of Life" at https://youtu.be/cGLOE7SrbiU.)
- Bark beetles: Curtis Ewing, a senior environmental scientist with Cal Fire's Forest Entomology and Pathology
- Children's tree-related activities: Jonelle Mason, a UC Agriculture and Natural Resources (UC ANR) employee and coordinator of Project Learning Tree (PLT) California, an initiative of the Sustainable Forestry Initiative,
- Tree cores and boring tools: UC Davis graduate student Jennifer Cribbs of the Graduate Program of Environmental Policy and Management
- Diabolical ironclad beetles: Brittany Kohler, Bohart research associate
- Family arts and crafts: Allen Chew, Sol Wantz and Kat Taylor, all UC Davis undergraduate students
- Petting zoo: Kaitai Liu, undergraduate student in the Jason Bond lab; Veronica Casey, graduate student in Shahid Siddique lab; and Grace Horne, graduate student in Emily Meineke lab
The Bohart Museum, dedicated to "understanding, documenting and communicating terrestrial arthropod diversity," was founded in 1946 and named for UC Davis professor and noted entomologist Richard Bohart. It houses a global collection of eight million insect specimens, plus a live "petting zoo," featuring Madagascar hissing cockroaches, walking sticks and tarantulas; and a year-around gift shop, stocked with insect-themed books, posters, jewelry, t-shirts, hoodies and more. The museum is open to the public from 8 a.m. to noon and from 1 to 5 p.m., Mondays through Fridays.
- Author: Kathy Keatley Garvey
Something clicked at the Bohart Museum of Entomology open house on "Beetlemania" last Sunday afternoon at the University of California, Davis.
But it was not the click beetles.
That "click" was the love of science in general, and the love of beetles, in particular.
The Bohart Museum open house, from 1 to 4 p.m., drew 500 visitors, despite the fact that the event, timewise, clashed with the San Francisco 49'ers-Dallas Cowboys' 3:30 playoff game (to determine which team would advance to the National Football Conference championship game).
Football? What's that? Or, as one Bohart associate quipped: "In sports, there's a little round ball (baseball), and a little bigger round ball (basketball) and then there's this little ball with the pointy ends (football)." (He forgot to mention the teeny-tiny round "golf" balls and the medium-sized "soccer" balls.)
So if you love both science and sports? No problem. Just arrive a little early and leave a little early to catch the game on TV.
Final score: 49'ers, 19. Cowboys, 12.
Wait, wasn't there a beetle score in there somewhere?
The Bohart Museum of Entomology, located in Room 1124 of the Academic Surge Building, 455 Crocker Lane, houses a global collection of eight million insect specimens, including a million beetles. Directed by Lynn Kimsey, UC Davis distinguished professor of entomology, UC Davis Department of Entomology and Nematology, the museum also houses a live "petting zoo" (Madagascar hissing cockroaches, stick insects, tarantulas and more) and a year-around gift shop. The Bohart is open to the public from 8 a.m. to noon, and 1 to 5 p.m., Mondays through Thursdays.