In Los Osos, the clue was an adult Asian citrus psyllid in an insect trap. The county report describes a small find with a larger question attached: whether more of the pest are nearby.
That question matters because the psyllid feeds on citrus and can carry huanglongbing, or citrus greening. The disease is deadly to citrus, and there is no cure.
The search around the trap
CDFA and the San Luis Obispo County Department of Agriculture/Weights and Measures are working around the site with high-density trapping, visual surveys and treatment. The county’s notice of the detection says the work is intended both to check for additional psyllids and reduce the risk of spread.
This detection demonstrates why we maintain an extensive pest detection network throughout San Luis Obispo County.
Martin Settevendemie, San Luis Obispo County Agricultural Commissioner/Sealer
A psyllid find is not an HLB diagnosis
The reported finding is an insect detection, not a report of huanglongbing in a local tree. The immediate test is whether follow-up work turns up more ACP; that result will shape what agencies ask of people near the site.
For citrus managers, the practical distinction is between a trap record and instructions for a particular property. The announcement describes activity around the detection site, so any changes to field work should be based on direction from San Luis Obispo County Agriculture/Weights and Measures or CDFA.