Jaenimonas is a genus of trypanosomatid parasite that infects mushroom-feeding Drosophila, similar to Crithidia parasites of Bumblebees.

Jaenimonas drosophilae is the sole representative of this genus.

[1] The genus is named in honor of John Jaenike, a prominent ecologist and evolutionary biologist whose work on mushroom-feeding flies laid the foundation for studies on mycophagous Drosophila.

[2][3][4] Jaenike was also an early proponent of the Red Queen hypothesis.

[5]