Belongs within: Strongyloidea.
The Trichostrongylidae are gastrointestinal parasites of warm-blooded vertebrates that lack a cephalic vesicle and have a poorly developed or absent synlophe.
<==Trichostrongylidae [Trichostrongyloidea]
|--TrichostrongylusCH-C06
| |--T. axei (Cobbold 1879)M58
| |--T. colubriformis (Giles 1892)M58
| |--T. falculatus Ransom 1911M58
| |--T. longispicularis Gordon 1933M58
| |--T. probolurus (Railliet 1896)M58
| |--T. retortaeformis (Zeder 1800)M58
| |--T. rugatus Mönnig 1925M58
| `--T. vitrinus Looss 1905M58
`--+--OstertagiaCH-C06
| |--O. leptospicularisCH-C06
| |--O. mentulata (Railliet & Henry 1909)M58
| |--O. occidentalis Ransom 1907M58
| `--O. ostertagi (Stiles 1892)M58
`--HaemonchusCH-C06
|--H. contortus (Rudolphi 1803)M58
|--H. longistipesMM02
|--H. placei (Place 1893)M58
`--H. similisG02
Trichostrongylidae incertae sedis:
Gazellostrongylus lerouxiG02
Graphidium strigosum (Dujardin 1845)M58
CooperiaL02
|--C. curticei (Railliet 1893)M58
|--C. mcmastersi Gordon 1932M58
|--C. oncophora (Railliet 1898)M58
|--C. pectinata Ransom 1907M58
|--C. punctata v. Linstow 1907M58
`--C. spatulata Baylis 1938M58
TeladorsagiaJ02
|--T. circumcincta (Stadelmann 1894)SD02, M58 [=Ostertagia circumcinctaSD02]
`--T. trifurcata (Ransom 1907)G02, M58 [=Ostertagia trifurcataG02]
Histiostrongylus cornatusK06
AsymmetricostrongylusM58
|--A. asymmetricus (Cameron 1926)M58
|--A. australis (Wood 1931)M58
|--A. dissimilis (Wood 1931)M58
`--A. trichosuri Johnston & Mawson 1939M58
AustrostrongylusM58
|--A. aggregatus Johnston & Mawson 1940M58
|--A. incurvispiculum Beveridge & Durette-Desset 1986BD-D09
|--A. macropodis Chandler 1924M58
|--A. minutus Johnston & Mawson 1938M58
|--A. potoroo Johnston & Mawson 1949M58
|--A. thylogale Johnston & Mawson 1940BD-D09
`--A. wallabiae Johnston & Mawson 1939M58
Anoplostrongylus heydoni Baylis 1930M58
Nycteridostrongyluis unicollis Baylis 1930M58
Hyostrongylus rubidus (Hassall & Stiles 1892)M58
*Type species of generic name indicated
References
[BD-D09] Beveridge, I., & M.-C. Durette-Desset. 2009. A new species of the nematode genus Copemania (Nematoda: Trichostrongylida), parasitic in the western quoll, Dasyurus geoffroii and short-nosed bandicoot, Isoodon obesulus from south-western Western Australia. Records of the Western Australian Museum 25 (3): 345–349.
[CH-C06] Chilton, N. B., F. Huby-Chilton, R. B. Gasser & I. Beveridge. 2006. The evolutionary origins of nematodes within the order Strongylida are related to predilection sites within hosts. Molecular Phylogenetics and Evolution 40 (1): 118–128.
[G02] Gibbons, L. M. 2002. General organisation. In: Lee, D. L. (ed.) The Biology of Nematodes pp. 31–59. Taylor & Francis: Florence (Kentucky).
[J02] Justine, J.-L. 2002. Male and female gametes and fertilisation. In: Lee, D. L. (ed.) The Biology of Nematodes pp. 73–119. Taylor & Francis: Florence (Kentucky).
[K06] Kwiecinski, G. G. 2006. Phyllostomus discolor. Mammalian Species 801: 1–11.
[L02] Lee, D. L. 2002. Life cycles. In: Lee, D. L. (ed.) The Biology of Nematodes pp. 61–72. Taylor & Francis: Florence (Kentucky).
[M58] Mackerras, M. J. 1958. Catalogue of Australian mammals and their recorded internal parasites. I–IV. Proceedings of the Linnean Society of New South Wales 83 (2): 101–160.
[MM02] Munn, E. A., & P. D. Munn. 2002. Feeding and digestion. In: Lee, D. L. (ed.) The Biology of Nematodes pp. 211–232. Taylor & Francis: Florence (Kentucky).
[SD02] Sangster, N. C., & R. J. Dobson. 2002. Anthelminthic resistance. In: Lee, D. L. (ed.) The Biology of Nematodes pp. 531–567. Taylor & Francis: Florence (Kentucky).