Contortylenchus
Contortylenchus is a genus of nematodes belonging to the family Allantonematidae. The species of this genus are found in Japan and Australia. Species:

Contortylenchus acuminati 
Contortylenchus amitini 
Contortylenchus cribicolli 
Contortylenchus cryphali 
Contortylenchus cunicularii 
Contortylenchus laricis 
Contortylenchus proximus

References

Nematodes