18 ASCHELMINTHES 



Sub-order Strongylina 



Strongylus {= Sclerostomum) : Oesophagostomum 

 (nodular worm); Ancylostoma, Necator (hook- 

 worms); Syngamus (gape worm); Haemonchus, 

 Cooperia, Ostertagia (trichostrongyles) ; 

 Metastrongylus, Dictyocaulus, Muellerius (lung- 

 worms) 

 Sub-order Ascaridina 

 Ascaris (large roundworm); Parascaris (horse 

 roundworm); Ascaridia (poultry roundworm); 

 Porrocaecum; Heterakis (poultry caecal worm); 

 Subulura; Enterobius (threadworm, pin worm); 

 Aspiculuris (mouse threadworm or pinworm) 



Order TYLENCHTOA 



Ditylenchus (stem-and-bulb eelworm) ; Anguina 

 (wheat gall eelworm); Heterodera (cyst eelworm); 

 Meloidogyne (root- knot eelworm); Aphelenchoides 

 (leaf eelworm) ; Sphaerularia 



Order SPIRURmA 



Dracunculus (guinea worm); Wuchereria (filarial 

 worm); Loa; Onchocerca; Diwfilaria (dog heart 

 worm); Set aria; Thelazia (eye worm); Gongylonema 

 (gullet worm) ; Habronema (horse stomach worm) ; 

 Gnathostoma; Philometra; Micropleura; Tetrameres 

 ( = Tropisurus) (poultry stomach worm) 



Sub-class APHASMIDIA 



Order CHROMADORTOA 



Plectus; Monhystera; Paracanthonchus ; 



Cylindrolaimus ; Desmoscolex 

 Order ENOPLmA 

 Sub-order Enoplina 



Enoplus; Tripyla; Mononchus 

 Sub-order Dorylaimina 



Dorylaimus; Xiphinema; Mermis; Trichuris 



( = Trichocephalus) (whipworm) ; Trichinella 



( = Trichina) (trichina worm) ; Capillaria 

 Sub-order Dioctophymatina 



Dioctophyme (dog kidney worm) ; Hystrichis 



Phylum ASCHELMINTHES 



Class NEMATODA (roundworms)^ 



Order ENOPLOIDEA 



Enoplus; Tripyla; Mononchus 

 Order DORYLAJMOmEA 



Dorylaimus; Xiphinema 

 Order MERMITHOIDEA 



Mermis 

 Order CHROMADOROroEA 



Paracanthonchus 

 » Alternative classification by Hyman (19516). 



