On November 19, Joe Cruz brought in some onion leaves with apparent thrips damage. Managed to find one thrips but it did not look like the usual suspects.
I have tentatively identified it as Dinuthrips hookeri based on a match to the description and images on the Thrips of California web site.
This thrips was first detected on Guam early in 2012. This is a South American species which has spread to the Caribbean and Florida. To date, it has not been found in California or Hawaii.