I was so pleased to catch a picture of this red spider mite (Tetranychus urticae) that I thought I would post it, as well as adding it to my spider identification project page.
It was running around very fast on a variegated ivy plant outside in the garden, over and under a leaf, and kept on evading me. I wouldn’t have noticed it if it hadn’t been moving, as it was less than half a millimetre long. It must have paused for just a moment on the stem when I shot this.
Spider mites are a pest on house plants and in the greenhouse, weaving their webs and sucking the life out of the plants. I don’t mind them in the garden, though (I say this even though this is the first time I have seen them outdoors…). More information about red spider mites on Wikipedia here.