Report a Pest
Who to contact
Help us monitor and prevent the spread of pests by reporting pests you see!
In Los Angeles County:
In the Santa Monica Mountains - Resource Conservation District of the Santa Monica Mountains
In Southern California (region wide):
You can report a suspected PSHB siting using iNaturalist. This pest is already widespread and confirmed in much of the Southern California region, so we may not have the resources to collect samples and confirm each report. Please include the tree species, if known, and photos of the whole tree, leaves/flowers/fruits that can help with identification, and a close-up of the observed bore holes with a ball point pen tip or similar item for scale. Reports in the iNaturalist site may or may not have been confirmed with laboratory analysis of the fungal agent.
View of map of laboratory confirmed PSHB locations.
Report a suspected GSOB sighting through www.gsob.org