These are in the family Chrysomelidae.
I'm pretty sure these are eggs of a Green Dock Beetle, Gastroidea cyanea.
I found these beetle larvae on Rumex leaves. I saw adult Green Dock Beetles and eggs today in the same area, so I am guessing these are Green Dock Beetle larvae, Gastroidea cyanea. If not it likely some other Chrysomelidae larvae.
This one had a dark green metallic sheen.
Convinced it is a Heterosilpha, but can't distinguish whether it is H. ramosa or H. aenescens with just this photo as a record.
There were many of these beetles on stalks of grass at Moore Creek Preserve today.
Alas, my photos are so bad I don't expect anyone will be able to ID this beetle found in a California Poppy. I've read that prior to the introduction of honey bees, Eschscholzia were predominantly pollinated by beetles. This pollen covered insect looked like he was ready to do just that.
As I walked through Moore Creek Preserve today I wondered if there might have been two species of cicadas present. I heard two distinct calls.
I can report that here are at least three species of Hordeums growing in Moore Creek Preserve thanks to Steve Gerow's assistance. Two are introduced species, and one a native. They are, from top to bottom: H. murinum, H. marinum and Hordeum brachyantherum.
It was good to see a fair amount of this grass in Moore Creek Preserve. Looking at patches of it from a distance, the purple really stood out from the surrounding green.
Smaller than the similar Farmer's Barley, Hordeum murinum. In my older books Mediterranean Barley, H. marinum seems to have been H. hystrix.
I'm not sure what species this one is.
Growing in footpath. Formerly called Orthocarpus pusillus.
This flower looks just like one of those in the clusters I'm familiar with in Brodiaeas. I have never seen a single blossom like this so close to the ground.
A large gall on stem of Quercus agrifolia. It felt hollow.
A smaller, daintier Equisetum than I usually encounter.
Widespread throughout grassland.