This longhorn beetle was tiny – only about 5mm long. It was crawling around on the dense white flower cluster of a cow/hedge parsley (umbelliferae) and looked at first to be just another fly. But then I realized that it wasn’t a fly and had a more careful look. I’ve never seen a longhorn as small as this and I think it must be one of the smallest species there is.
Species: Rhaphuma diminuta (himekurotora kamikiri)
[I’m not certain of this identification, but it seems to be correct, especially because of its small size]