He authored numerous texts and was one of the founders of entomology in Japan, responsible for training a generation of Japanese entomologists, and founding the journal Zephyrus.
He worked extensively on the heteroptera and focused on the Micronesian region.
From 1923 he taught at the College of Agriculture, Kyushu Imperial University, Fukuoka.
They moved back to Japan in 1929 and he became a professor of entomology in 1930 at Kyushu University.
In 1936 he became director of the Hikosan Biological Laboratory, established by baron Takachiho Nobumaro.