Hoplolaimus infected with course hyphae of Lagenidium, ejecting zoospores with evacuation tubes (picture is courtesy of Esser).

           

 

 

 

 

 

 

 

 

Lagenidium belongs to Lagenidiales. Zoospores of Lagenidium are anteriorly and laterally equally biflagellated, one tinsel and one whiplash type. Only lateral type is illustrated (drawing is courtesy of Esser).