Warren, E. (1939b). The genital system of Hypoctonus formosus (Butler) (Thelyphonidae). Annals of the Natal Museum 9: 307–344.
| Taxon | |
|---|---|
| Hypoctonus formosus insularis (Oates, 1889) (Uropygi: Thelyphonidae) | 307–343, figs 1–8, 9(12), plate XXIII, Hypoctonus formosus var. insularis (Oates) |