Shikoku (Sikoku),  Japan
latitude: 33.75     33°45'0"N
longitude: 133.5     133°30'0"E
[Precision of location: Alexandria Digital Library (with NGA GNDB data)] 
[Site Named Here by name of island, bay, strait, lake, river, or stream, etc., named in source publication] 
| Dugesia japonica Ichikawa & Kawakatsu, 1964 | 1974 or earlier | Shikoku. | 
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