Common name might be Lymantriine Moth or Tussock Moth or Ringo-doku-ga, please, check the link, there is also a name "apple toxic moth" mentioned.
http://www.flickr.com/photos/10394300@N05/5205727951/
Very similar to our Calliteara pudipunda:
http://www.projectnoah.org/spottings/8342139
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