| author | date | title | journal / publication | Haswell WA | 1915 | Studies on the Turbellaria. Part 3. Didymorchis. | Quart. J. Microsc. Sci. (n. s.). 61: 161-170 |
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| Didymorchis astacopsidis Haswell, 1900 | w | other taxonomic work | ||
| Didymorchis cherapsis Haswell, 1900 | w | other taxonomic work |