Come into my parlour

A few strands of web just under the bark on a eucalypt. A small dot of red that moves surprisingly quickly, especially when you're trying to focus on it. A Red-n-Black Spider Ambricodamus sp. It's only about 13 mm long but quite noticeable against the brown bark, and apparently quite common, but not dangerous.

This photo I'm posting just because I like it. I've got no idea what it is.