These are baby ladybugs!
I didn't know what they were at first, I kept seeing these excellent looking bugs which seemed to be eating away at the mould on my pumpkin and zucchini plants. It was the spots that eventually gave me the idea that perhaps these were ladybug babies, so I googled away, and sure enough, that's what they are.
Pretty cool hey. And babyladybugs is my new favourite word. Try saying it fast, it's all sorts of fun.