California Prionus Beetle (Prionus californicus) on Jul 27, 2022
Submitter has sample
Description of specimen
Found on deck at Vineyard mtn
Submitter has sample
Found on deck at Vineyard mtn
This is not an invasive insect. This is our native California root borer, Prionus californicus. Their grubs feed in dead conifer stumps. They are not tree killers.
Thank you for being on the lookout!
Tom Valente
July 28, 2022, 4:53 a.m.