- Author: Beatriz Nobua Behrmann
[Originally published in the Fall 2018 issue of the Green Bulletin. Modified slightly from original.]
Invasive wood-boring beetles are attacking hundreds of thousands of trees in southern California, including commercial avocados, and trees within urban landscapes and wildland environments.
The invasive shot hole borers (ISHBs) consist of two closely related and morphologically identical species of beetles in the genus Euwallacea: the polyphagous shot hole borer and the Kuroshio shot hole borer. Despite their small size (1.8–2.5 mm) (Figure 1), these beetles are causing big...
- Author: Karey Windbiel-Rojas
Originally posted August 26, 2016; edited July 10, 2018
Have you seen big green beetles in your California yard or garden? Or beetles feeding on your roses or other plants? There are many kinds of beetles commonly found in our landscapes, but the Japanese beetle is not one of them.
Japanese Beetles
Many people think they've seen the Japanese beetle, a small scarab beetle with metallic green wings with white spots on the margins. However, Japanese beetles are generally not found in California.
The Japanese beetle is an exotic and potentially invasive pest for which the California Department of Food and Agriculture (CDFA) is conducting eradication efforts to limit its spread...
- Author: Kathy Keatley Garvey
Ladybug! Ladybug!
Fly away home.
Your house is on fire
And your children are gone.
How many times have you heard that nursery rhyme? Better yet, how many times have you seen a lady beetle (because they're beetles, not bugs) take off?
Look closely for lady beetles in aphid-infested milkweed plants and you might see this phenomenon. The lady beetle opens its elytra (a modified hardened protective wing case) and out pop the wings.
This lady beetle was munching and crunching aphids on a tropical milkweed this afternoon in Vacaville, Calif., and then opted to take flight. Just another beneficial insect eating soft-bodied...
![Adult hoplia beetle and feeding damage. [J.K.Clark]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/43235small.jpg)
If you grow roses, you might be noticing damage on the flowers caused by hoplia beetles (Hoplia callipyge). Hoplia beetles, which are common between March and May, especially in the Central Valley, feed on the blossoms of light-colored roses and other flowers in your landscape.
Hoplia beetle adults are small, reddish-brown scarab beetles that are often found resting inside a blossom. If you hold one in your hand, you'll notice that most of the body is a beautiful, iridescent silvery green color in the sunlight.
These beetles may also occasionally be found feeding on other plants with light-colored petals.
Some people believe they have the rose chafer or Japanese beetle in their landscape, however...
![Carpet beetle final-instar larval cast skin and adult. [D.Choe]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/42403small.jpg)
Have you noticed small, rounded beetles that resemble miniature lady beetles crawling your home lately? If so, you may have carpet beetles.
Carpet beetles can be pests in homes, museums, and warehouses, where they feed on food such as fabric, wool carpet and rugs, stored food, and natural animal products including furs, feathers, bone, silk, and preserved specimens.
Adult carpet beetles don't feed on fabrics but instead feed on the pollen and nectar of outdoor plants. However, once they find their way indoors-- which could be through an open door or on cut flowers brought inside-- adults lay their eggs on a food source and within two weeks, their eggs hatch and begin to feed. Larvae feed in dark, secluded places and as...
