Meristacrum is a fungal genus in the monotypic family Meristacraceae, of the order Entomophthorales. They are parasites of soil invertebrates, they typically infect nematodes, and tardigrades.

Fungi strains such as Meristacrum asterospermum and Zygnemomyces echinulatus have been identified as potential sources of biological control against parasitic nematodes. Although, they have yet to be raised within laboratory or Axenic conditions.

...