I had to get right on top of this little fella. He was no more than 3mm in diameter.

Here's a blowup from another shot. Otherworldly.

Here's a totally unrelated nature picture, since I'm playing show and tell.

I believe this must be a Gasteracantha cancriformis -- https://en.wikipedia.org/wiki/Gasteracantha_cancriformis . This one was not full grown though. Very small. I have seen larger ones. They would have been much easer to photograph, but apparently they only reach about 10mm.

Nice. But you could have said 'here's an alien invasion that i captured on camera' and i would have believed that as well.

There's something similar in Australia, but haven't seen them in Taiwan.