This longhorn beetle shows a great deal of colour variation, including 8-spotted varieties (hence the name).

Leptura arcuata mimicaLeptura arcuata mimica

Coleoptera: Cerambycidae (Longhorn Beetles)
Leptura arcuata mimica
= yatsuboshi-hana-kamikiri

Location: fureiai-no-mori Forest Park in Munakata (map here)