Trichomaris is a genus of fungi in the family Halosphaeriaceae.
[1] This is a monotypic genus, containing the single species Trichomaris invadens.
[2] This fungus causes a disease of tanner crabs.
It forms a layer of dark hyphae on the exoskeleton of affected hosts.
Perithecia form atop this layer and produce ascospores with distinctive gelatinous appendages.