| Macrostomum amaniense Young, 1976 | | w | primary taxonomic authority (describer) | 55, Figs 7A-F |
| Macrostomum christinae Young, 1976 | | w | primary taxonomic authority (describer) | 53-54, Figs. 5A-C |
| Macrostomum coxi Young, 1976 | | w | primary taxonomic authority (describer) | 49-50, Fig 1 |
| Macrostomum georgeense Young, 1976 | | w | primary taxonomic authority (describer) | 55-56, Figs. 8A-D |
| Macrostomum nairobiense Young, 1976 | | w | primary taxonomic authority (describer) | 52-53, Figs 4A-E |
| Macrostomum reynoldsoni Young, 1976 | | w | primary taxonomic authority (describer) | 52, Figs 3A-F |
| Macrostomum sinyaense Young, 1976 | | w | primary taxonomic authority (describer) | 56-58, Figs 9A-G |
| Macrostomum thingithuense Young, 1976 | | w | primary taxonomic authority (describer) | 54-55, Figs 6A-E |
| Macrostomum orthostylum Braun, 1885 | | w | other taxonomic work | 58, Figs. 10A-F |
| Macrostomum rostratum Papi, 1951 | [with synonyms] | w | other taxonomic work | 58, Fig 10 |
| Macrostomum tuba Graff, 1882 | [with synonyms] | w | other taxonomic work | 58-59, Fig 10 |
| Macrostomum tuba verbekei Marcus & Marcus, 1957 | | w | other taxonomic work | |
| Macrostomum baringoense Young, 1976 | | w | primary taxonomic authority (describer) | 51-52, Figs. 2 A-F |
