Key to the Korean Nannastacus species

1 Uropod, peduncle> 0.5 times as long as last abdominal segment; carapace without large spatulate tubercles............. 2

- Uropod, peduncle <0.5 times as long as last abdominal segment; carapace with large spatulate tubercles... N. leeae sp. nov.

2 Body covered with numerous minute granules; pereon with dorsal teeth.................... N. nyctagineus Gamô, 1962

- Body covered with numerous distinct spinules and spines; pereon with spinules and acute spines.. N. spinulosus Gamô, 1962