I found this incredible caterpillar on a tree at the side of a popular jogging track next to Nagatani Dam in Kashii, Fukuoka. What a beaut!!

Brahmaea japonicaBrahmaea japonicaBrahmaea japonicaBrahmaea japonica

Lepidoptera: Brahmaeidae
Brahmaea japonica
Japanese Owl Silkmoth = ibotaga

Location: Nagatani Dam, Kashii, Fukuoka (Google map)