This was a great find! It’s a small spider wasp (about 10mm) carrying a fairly big spider. The wasp seems to have bitten off the spider’s legs — presumably to make carrying it easier. The wasp will dig a hole and place the paralyzed spider inside. It will lay one or more eggs and, after hatching, the wasp’s larvae will then feed on the spider.
It was difficult to get a photo because it wouldn’t keep still. Also, I didn’t want to disturb it too much because it would have dropped its prey and flown away.
It’s a pity that I can’t identify it at the moment. I’ll try again later.
Hymenoptera: Pompilidae (Spider Wasps)
Spider Wasp = bekkou
Location: Munakata Common (map)