| Date | 1869 |
| Author | Fedchenko |
| Contribution | Observed Dracunculus larvae in crustacean host. |
| Reference | Grove |
| Notes | Dracunculus medinensis, the Guinea Worm. Also given as discoverer of life cycle in following year. Both correct? Observation allegedly prompted by Leuckart. |
| Category | Miscellany |
| Pathogen Class | Helminths |
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