Belongs within: Schistosomatidae.
The Schistosomatinae are a group of blood flukes with relatively simple seminal receptacles (Lockyer et al. 2003).
Synapomorphies (Lockyer et al. 2003): Seminal receptacle simple, sac-like; seminal vesicle relatively simple, genital pore located just posterior to ventral sucker; male caeca fused for at least half of body length.
<==Schistosomatinae [Eubilharziinae]
|--Macrobilharzia Travassos 1922LO03
`--+--+--Schistosomatium Tanabe 1923LO03
| | |--S. douthitti (Cort 1915)LO03
| | `--S. pathlocopticumPB27
| `--Heterobilharzia Price 1929LO03
| `--H. americana Price 1929LO03
`--+--+--Austrobilharzia Johnston 1917LO03
| | |--A. odhneri (Faust 1924) [=Ornithobilharzia odhneri, Sinobilharzia odhneri]LO03
| | |--A. terrigalensis Johnson 1916LO03
| | `--A. variglandis (Miller & Northup 1926)LO03
| `--Ornithobilharzia Odhner 1912LO03
| |--O. bomfordi (Montgomery 1906)D56
| |--O. canaliculata (Rudolphi 1819) [=Ornithobilharziella canaliculata]LO03
| |--O. intermedia (Odhner 1910)D56
| `--O. turkestanica (Skrjabin 1913)D56
`--+--Bivitellobilharzia Vogel & Minning 1940LO03
`--Schistosoma Weinland 1858LO03 (see below for synonymy)
| i. s.: S. hippopotamiLO03
| S. ovuncatumLO03
|--+--S. sinensium Bao 1958LO03
| `--+--S. japonicum Katsurada 1904LO03
| `--+--S. malayensis Greer et al. 1988LO03
| `--S. mekongi Voge, Buckner & Bruce 1978LO03
`--+--Orientobilharzia Dutt & Srivastava 1955LO03
| `--O. turkestanicum (Skrjabin 1913)LO03
`--+--S. incognitum Chandler 1926LO03
`--+--+--S. edwardienseLO03
| |--S. mansoni Sambon 1907LO03
| `--S. rodhaini Brumpt 1931LO03
`--+--+--S. nasale Rao 1933LO03
| `--+--S. indicum Montgomery 1906LO03
| `--S. spindale Montgomery 1906LO03
`--+--S. margrebowiei Le Roux 1933LO03
`--+--S. leiperi Le Roux 1955LO03
`--+--S. mattheei Veglia & Le Roux 1929LO03
`--+--S. haematobium (Bilharz 1852)LO03 (see below for synonymy)
`--+--S. bovis (Sonsoni 1876)LO03
|--S. curassoni Brumpt 1931LO03
`--S. intercalatum Fisher 1934LO03
Schistosoma Weinland 1858LO03 [incl. Bilharzia Cobbold 1879D56, Gynaecophorus Diesing 1858D56, Thecosoma Moquin-Tandon 1860D56]
Schistosoma haematobium (Bilharz 1852)LO03 [=Distoma haematobiumD56, Bilharzia haematobiaD56, Gynaecophorus haematobiusD56, Thecosoma haematobiumD56; incl. Distoma capense Harley 1864D56, Schistosoma capensePB27]
*Type species of generic name indicated
References
[D56] Dawes, B. 1956. The Trematoda with special reference to British and other European forms 2nd ed. University Press: Cambridge.
[LO03] Lockyer, A. E., P. D. Olson, P. Østergaard, D. Rollinson, D. A. Johnston, S. W. Attwood, V. R. Southgate, P. Horak, S. D. Snyder, T. H. Le, T. Agatsuma, D. P. McManus, A. C. Carmichael, S. Naem & D. T. J. Littlewood. 2003. The phylogeny of the Schistosomatidae based on three genes with emphasis on the interrelationships of Schistosoma Weinland, 1858. Parasitology 126: 203–224.
[PB27] Pilsbry, H. A., & J. Bequaert. 1927. The aquatic mollusks of the Belgian Congo, with a geographical and ecological account of Congo malacology. Bulletin of the American Museum of Natural History 53 (2): 69–602, pls 10–77.