Revisiting the type material of two African Diplozoinae (Diplozoidae: Monogenea), with remarks on morphology, systematics and diplozoid specificity Department of Zoology, Faculty of Science, University of Johannesburg (Auckland Park Campus), Johannesburg, Gauteng, South Africa DOI 10.7717/peerj.17020 Academic Editor Jean-Lou Justine Subject Areas Marine Biology, Parasitology, Taxonomy, Zoology Keywords Platyhelminthes, Fish parasite, Biodiversity, Freshwater, Paradiplozoon, Polyopisthocotyla...