|  | site | site # (info) | collection date | kind | depth | substrate | salin | comments | reference | 
| A | eastern Korea | 4528 
  map | 1974 or earlier |  |  |  |  | The eastern half of Korea (including the Sobaek Mountains and the Taebaek Mountains). | Kawakatsu M (1974): 308 | 
| B | Ullungdo Island, Sea of Japan, South Korea | 4527 
  map | 1974 or earlier |  |  |  |  | Ullungdo Island. | Kawakatsu M (1974): 308 | 
| C | Shodo-shima (Shodoshima) Island, on the Inland Sea, Japan | 4526 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| D | Sadoga-shima (Sado, Sado-ga-shima, Sadogashima) Island, Japan | 4524 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| E | Okinoshima  Island, Genkai Sea, Sea of Japan, Japan | 4523 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| F | Tokaido (Tokai) region, Honshu, Japan | 4522 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| G | Hokuriku region, Honshu, Japan | 4521 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| H | Kinki-chiho (Kinki) region, Honshu,  Japan | 4520 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| I | Chugoku (Chikoku), Japan | 4519 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| J | Chubu-chiho (Chubu District), Honshu, Japan | 4531 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| K | Kanto-chiho (Kanto District, East of the Barrier, Kwanto, Quanto), Honshu, Japan | 4532 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| L | Tohoku-chiho (Tohoku District, O-chiho), Honshu, Japan | 4533 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| M | Shimokita-hanto (Tonami-hanto, Shimokita Peninsula), Japan | 4529 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| N | Tsugaru-hanto (Tsugaru Peninsula), Japan | 4530 
  map | 1974 or earlier |  |  |  |  |  | Kawakatsu M (1974): 308 | 
| O | Oshima-hanto (Watari Shima, Oshima Peninsula), Japan | 4534 
  map | 1974 or earlier |  |  |  |  | South and Central Hokkaido (seaboard and the Lake Onuma districts in the Oshima Peninusula, northeastern part of the Lake Shikotsu-ko district, the Erimo Cape, the Hidaka Mountains, the Mts. Daisetsu district and the southern part Kitami Mts.) | Kawakatsu M (1974): 308 | 
| P | Shikotsu-ko (Shikotsu Lake), Japan | 4535 
  map | 1974 or earlier |  |  |  |  | South and Central Hokkaido (seaboard and the Lake Onuma districts in the Oshima Peninusula, northeastern part of the Lake Shikotsu-ko district, the Erimo Cape, the Hidaka Mountains, the Mts. Daisetsu district and the southern part Kitami Mts.) | Kawakatsu M (1974): 308 | 
| Q | Erimo-misaki (Erimo Cape), Japan | 4239 
  map | 1974 or earlier |  |  |  |  | South and Central Hokkaido (seaboard and the Lake Onuma districts in the Oshima Peninusula, northeastern part of the Lake Shikotsu-ko district, the Erimo Cape, the Hidaka Mountains, the Mts. Daisetsu district and the southern part Kitami Mts.) | Kawakatsu M (1974): 308 | 
| R | Hidaka-sammyaku (Hidaka mountains, Hitaka), Japan | 4536 
  map | 1974 or earlier |  |  |  |  | South and Central Hokkaido (seaboard and the Lake Onuma districts in the Oshima Peninusula, northeastern part of the Lake Shikotsu-ko district, the Erimo Cape, the Hidaka Mountains, the Mts. Daisetsu district and the southern part Kitami Mts.) | Kawakatsu M (1974): 308 | 
| S | Daisetsu-zan (Daisetsu mountains), Japan | 4537 
  map | 1974 or earlier |  |  |  |  | South and Central Hokkaido (seaboard and the Lake Onuma districts in the Oshima Peninusula, northeastern part of the Lake Shikotsu-ko district, the Erimo Cape, the Hidaka Mountains, the Mts. Daisetsu district and the southern part Kitami Mts.) | Kawakatsu M (1974): 308 | 
| T | Okushiri Island, Japan | 4069 
  map | 1974 or earlier |  |  |  |  | South and Central Hokkaido (seaboard and the Lake Onuma districts in the Oshima Peninusula, northeastern part of the Lake Shikotsu-ko district, the Erimo Cape, the Hidaka Mountains, the Mts. Daisetsu district and the southern part Kitami Mts.) | Kawakatsu M (1974): 308 | 
| U | Akan National Park, Hokkaido, Japan | 4539 
  map | 1974 or earlier |  |  |  |  | East Hokkaido (the Akan National Park and the Shiretoko Peninsula). | Kawakatsu M (1974): 308 | 
| V | Shiretoko-hanto (Shiretoko peninsula), Hokkaido, Japan | 4538 
  map | 1974 or earlier |  |  |  |  | East Hokkaido (the Akan National Park and the Shiretoko Peninsula). | Kawakatsu M (1974): 308 | 
| W | point to represent Zenkôji-daira Height and adjacent mountain districts, Chûbu Region, Honshû, Japan | 6744 
  map | 1952-1971 |  |  |  | freshwater | common below the altitude of 2125 m. | Kawakatsu M, Murayama H, Nimura F (1971): 51-52 | 
| X | point to represent Natsudomari Peninsula and the western part of the Shimokita Peninsula, Aomori Prefecture, Japan | 6746 
  map | 1970 or earlier |  |  |  | freshwater | common at the stations below the altitude of about 500 m. | Kawakatsu M, Teshirogi W, Tsushima K (1970): 115 | 
| Y | point to represent the eastern part of the Aomori Prefecture, Japan | 6748 
  map | 1970 or earlier |  |  |  | freshwater | common at stations below the altitude of about 700 metres. | Kawakatsu M, Teshirogi W, Fujiwara H (1970): 127-128 | 
| Z | Jinmingsi (Chinming), near Jingpo Hu (Chingpo-Hu), Heilongjiang, China | 6752 
  map | 1940 or earlier | default type |  |  |  | A cool spring (Chinming-Shui), near Lake Chingpo-Hu, Helung-Chiang Shêng, China | Okugawa KI (1939): and Okugawa 1940 (citation); from Kawakatsu & Liu 1987 (citation) | 
| A1 | Yang-dong (Yangdeog), P’yŏngan-namdo, North Korea | 6759 
  map | 1939 or earlier |  |  |  |  |  | Tu TJ (1939-1940): from Kawakatsu & Liu 1987 (citation) | 
| B1 | Fouhsi, near P’yŏnggang (Pyonggang), Kangwŏn-do (Gang Bug Do), North Korea | 6760 
  map | 1939 or earlier |  |  |  |  |  | Tu TJ (1939-1940): from Kawakatsu & Liu 1987 (citation) | 
| C1 | Chenqingqiao, Heilongjiang, China | 6766 
  map | 1939 or earlier | default type |  |  |  | A small stream at Ch'êng, Peiheihsien, a tributary of the River Nên-He, Heilung-Chiang Shêng. | Okugawa KI (1939): from Kawakatsu & Liu 1987 (citation) | 
| D1 | Daisetsuzan National Park, Hokkaidō, Japan | 6805 
  map | 1968 |  |  |  | freshwater |  | Kawakatsu M, Iwaki S, Yamada T (1969): p. 94 | 
| E1 | Hidaka, Japan | 4242 
  map | 1967-1970 |  |  |  |  | south-western slope of the Hidaka Mountain Range.  The main river systems are the Mukawa, the Saru, the Monbetsu, and the Nikappu.  Survey from spring to autumn.  Common below altitudes of 100 m. | Kawakatsu M, Shimamura M (1974): 87 from abstract | 
| F1 | Mount Iwaki, Hirosaki, Aomori Prefecture, Japan | 7228 
  map | 2000 or earlier |  |  |  |  |  | Asano Y, Yoshida A, Isozaki N, Ishida S (2001): 137 | 
| G1 | Khor River, near Khabarovsk, Siberia, Russia | 7235 
  map | Sep 4, 1997 |  |  |  |  | Khor River, near Khabarovsk, Siberia, Russia | Sluys R, Kawakatsu M, Timoshkin OA (2001): 194 |