- Author: Cindy Kron
On March 27th, 2024, a flatbed truck carrying a metal art structure originating in New York and headed to Petaluma, California was stopped at the California Department of Food and Agriculture (CDFA) Agricultural Inspection Station in Truckee, California due to live spotted lanternfly (SLF) egg masses being present on the structure (Fig. 1).
Entry of the structure was denied, and the truck reported to the Nevada Department of Agriculture for inspection and treatment for SLF eggs on April 2, 2024. Approximately 30 egg masses were removed and destroyed (Fig. 2). The structure was power washed with soap and water and cleared to enter California with instructions to not offload the structure at the destination until inspected and released by the Sonoma County Department of Agriculture/Weights & Measures.
Upon arrival for inspection, the Sonoma County agricultural inspector found the structure already offloaded from the truck and during an in-depth inspection of the structure, three more SLF egg masses were discovered. Additional inspectors were called in, and with the help of operators and equipment at the destination site, the agricultural inspectors were able to inspect all surface areas and ensure the structure was free of SLF egg masses.
To put this into perspective, spotted lanternfly egg masses contain 30 to 50 eggs each, meaning that this structure had between 990 to 1,650 live SLF eggs arriving approximately a month prior to the expected hatching time.
In July of 2021, the CDFA established a quarantine to prohibit the introduction of the spotted lanternfly (Lycorma delicatula) into California (Release #21-077). The quarantine prohibits the entry into California of SLF, its host plants and plant parts (including firewood), shipping containers, and a variety of articles, including outdoor household articles and conveyances (cars, boats, trailers, tractors, etc.) originating from any area where an SLF infestation exists without proper documentation.
Nymphs cannot fly and adults do not readily fly away when approached so both can be easily collected. Early detection is key for preventing the establishment of this species. Californians need to remain vigilant and together, we can all play a role in keeping the spotted lanternfly out of California.
Adapted from an article by Cindy Kron, Ph.D published in CAPCA's magazine, "The Advisor" published August 2024.
- Author: Lauren Snowden
Spotted Lanternfly
SLF is a destructive invasive insect threatening agricultural and ornamental plants across the United States. Although the pest is not in California at this time, a key to slowing its spread is early detection and rapid response if detected. Through the education of California residents and resource professionals, we can all be part of keeping this invasive pest at bay.
With the assistance of the California Department of Food and Agriculture, UC Academics, and Penn State Extension, the UC Master Gardener Program “Spotted Lanternfly in California” eLearning course was created and is now available to all. Pest information and additional resources are available online.
How to Enroll
Course enrollment is free and accessed through eXtension Campus, you must either have or create a free login to enroll in the course. If you encounter problems or have questions about creating your account, please see the Campus Help Page. The course takes approximately 40 minutes and includes a graded quiz, completion time may vary by user. Learners may stop and restart, or take as many times as needed.
How to Receive a Certificate
To receive a certificate for the “Spotted Lanternfly in California” eLearning course, you must view and complete the module, as well as pass the quiz with a score of 80% or higher. Once you have passed the quiz, you can print a certificate and collect a virtual Spotted Lanternfly eLearning badge.
Continuing Education
UC Master Gardeners are eligible for one hour of continuing education for completing the “Spotted Lanternfly in California” eLearning course. It is the volunteers' responsibility to enter their hours in the Volunteer Management System to receive credit.
