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eastern half of Canada
arbitrary point to represent the eastern half of Canada.
latitude: 49
longitude: -75
Precision of location: Gauged from chart or map
Site Named Here: By name of sea, gulf, or country named in source publication
| Phagocata morgani | 1989 or earlier | Eastern half of the United States and Canada, also introduced into California. | ||
| Procotyla fluviatilis | 1989 or earlier | Eastern and midwestern United States and Canada |