国後島
G. H. A. Budde-Lund found samples of "L. cinerascens" on a long ocean exploration, and when he returned he couldn't remember if they had come from Japan, Manila or Chile, limiting our current knowledge of the full range of the species. It has also been found on Kuril Islands (specifically Kunashir Island) and Peter the Great Gulf in far western Russia. It is one of four ligia species to be found on Japanese coasts. Specifically, it is found mainly on Hokkaido, with a separate population in Tokyo Bay.