The Bagrada Bug, a pest that arrived in Southern California sometime in 2008, is now in Yolo County. An infestation was found in Esparto in August, 2014. Watch a short clip of the Bagrada Bug
This pest is a member of the stink bug family, although typically is about half the size, or smaller, than a stink bug. It’s originally from southern Africa. It has a wide host range, but seems to prefer feeding on crucifers. It’s a sucking insect and its damage is a series of chlorotic spots on leaves (see the pictures of the bug).
Most stinkbugs’ egg masses are barrel shaped and laid in groups of a dozen or more. The Bagrada bugs’ eggs may be laid singly, or in smaller, dispersed bunches, and are rounder and less barrel-shaped than is typical of stink bug eggs. They will generally lay eggs on leaves, but unlike most stinkbugs, will also lay eggs in the soil.
Additional information and resources:
1. Has good pictures of adults, eggs and nymphs, as well as some damage, and links to other sources of information. http://www.ipm.ucdavis.edu/pestalert/pabagradabug.html
2. Has information on host range of crops and ornamentals, as well as management options. http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74166.html
3. Has a good set of pictures of the pest, and links to other informational sources and popular press stories about the pest. https://cisr.ucr.edu/bagrada_bug.html
4. A good article that highlights research about feeding behavior and damage of this pest. http://westernfarmpress.com/vegetables/finding-solutions-bagrada-bug-control-west
5. A short 2-pager with some pictures and short description of monitoring, lifecycle, damage, recognition, etc. http://ucanr.edu/sites/UCNFA/files/154583.pdf
6. This 3-minute presentation outlines the damage, host, controls, monitoring and different life stages of this pest. www.youtube.com/watch?v=gSj3AZoJIRM