The garden is in Los Angeles County. The bugs appeared around the beginning of April.
Attached are images. One is a close-up. One is some more bugs near a nickel to get a sense of their size.
I have caught several of the bugs in the act of eating my strawberries. They don't bother them when they are green, but as soon as they start turning red, the bugs just start carving out holes in the sides of the strawberries.
I have also observed them crawling on my bok choy, which has holes in the leaves, but I'm not entirely sure it is them eating the bok choy. We also recently had ear wigs we are taking care of with traps, which may be what was eating the bok choy.
I have also observed them just running along the sides of my planter box in straight lines. They are fairly fast moving when on the wood.
I've checked out several search results on "<#> common strawberry pests", but none of them appear to look anything like these.
Anyone have any information or any leads to go on?