Poikilolaimus
Poikilolaimus is a genus of nematodes belonging to the family Rhabditidae. The species of this genus are found in Europe, America. Species:

Poikilolaimus ernstmayri 
Poikilolaimus micoletzkyi
Poikilolaimus piniperdae 
Poikilolaimus regenfussi

References

Nematodes