![Adult (top) and mature nymph of the brown marmorated stink bug. [S. Ausmus]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/34755small.jpg)
The brown marmorated stink bug (Halyomorpha halys) or BMSB is a new invasive pest of urban and suburban homes and landscapes in California.
A native of Asia, the brown marmorated stink bug immigrated into the United States in the 1990s but has only recently been reported in California. The bug prefers to feed on seeds and fruits, so is most damaging to fruit crops; however, it is a polyphagous feeder that may feed on fruit, leaves, or seeds of many ornamental plants as well.
Landscape managers may become most aware of this new pest in the fall when it aggregates in very large numbers on trees or within dwellings, often becoming a nuisance pest.
For more information about the brown marmorated stink bug, read the...
- Author: Siavash Taravati
![Brown marmorated stink bug adult (top) and nymph (bottom). [A. Ausmus]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/34180small.jpg)
Brown marmorated stink bug (BMSB), Halyomorpha halys, is an invasive pest native to East Asia (China, Japan, Korea, Taiwan) which was first sighted in the United States in 1996 in Allentown, PA, and reached California in 2006 (Pasadena and San Marino). It is currently established in several regions in California including Los Angeles, Santa Clara, Stanislaus, San Joaquin, Sacramento, Yolo, Sutter, Butte, and Siskiyou counties.
Since its introduction, BMSB has spread to 38 states on the East and West Coasts, where it has caused damage to fruits, vegetables, and ornamental plants. BMSB is also a significant nuisance pest for residents and businesses, since it may invade structures in large numbers for overwintering during...
- Author: Jeannette E. Warnert
![Adult brown marmorated stink bug](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/31345small.jpg)
The brown marmorated stink bug (BMSB) has made its way to Stanislaus County, reported John Holland in the Modesto Bee. The invasive pest, introduced into the U.S. from Asia, has also been detected in San Joaquin, Sacramento, Yolo, Sutter, Butte, Santa Clara and Los Angeles counties.
The stink bugs pose a threat to a wide variety of plants, including home-grown and commercial ornamentals, fruits, vegetables and nuts, said Jhalendra Rijal, the area Integrated Pest Management Advisor with UC Agriculture and Natural Resources. Rijal is based at the
- Author: Jeannette E. Warnert
![White stripes on the bug's antennae are a dead giveaway the insect is brown marmorated stink bug. [K. Windbiel-Rojas]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/30740small.jpg)
The California population of brown marmorated stink bugs, a pest introduced into the state from its native Asia, continues to spread and increase in and around Sacramento, said a UC Agriculture and Natural Resources (UC ANR) expert who appeared today on Capitol Public Radio's Insight program with Beth Ruyak.
Chuck Ingels, UC ANR Cooperative Extension advisor in Sacramento County, said BMSB was first spotted in 2013 in Sacramento and each year the numbers have grown. This year, the warm spring gave BMSB a head start, portending significant...
![Brown marmorated stink bug. Photo by K. Windbiel-Rojas](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/22119small.jpg)
The brown marmorated stink bug (BMSB), a new invasive pest that originated in Asia, is moving into California gardens and landscapes. This stink bug has devastated fruit and vegetable crops in the eastern U.S. and is beginning to establish itself on the West Coast. BMSB built up significant overwintering populations in landscapes in the City of Sacramento last fall and has been found sporadically in many other areas of the state from San Diego northward. It could become a pest in gardens in some parts of the state as soon as this year. A new UC IPM Pest Note: Brown Marmorated Stink Bug written by Chuck Ingels, UCCE Sacramento, and Lucia Varela, UC Statewide IPM...