Mayorella with fungus
Fungus with 8-shaped haustorium (r)

 

Mayorella infected by a fungus

 

The photomicrograph above shows a Mayorella-species infected by a fungus. This fungus is specialized in parasitizing mayorellid amoebae, maybe even exclusively Mayorella penardi. Unfortunately, infected amoebae are very rare. I have seen them occasionally and once abundant in a culture.

 

Mayorella with fungus