| author | date | title | journal / publication | Ehlers U | 1981 | Fine structure of the giant aflagellate spermatozoon in Pseudostomum quadrioculatum (Leuckart) (Platyhelminthes, Prolecithophora). | Hydrobiologia 84:287-300. |
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| Pseudostomum quadrioculatum (Leuckart, 1847) | [with synonyms] | w | latest taxonomic authority |