Etheirophoraceae is a family of ascomycetous marine based fungi within the order of Torpedosporales in the subclass Hypocreomycetidae and within the class Sordariomycetes.

[4][5] It contains the following genera (with amount of species);[5] Note former species;[11] In 1987, Kohlmeyer & Volkmann-Kohlmeyer established the genus Swampomyces to accommodate Swampomyces armeniacus that is characterized by clypeate ascomata, apricot centrum, cylindrical asci and one-septate ascospores that are hyaline to yellowish, appearing light apricot-colored in mass.

[3] The family (in 2023) includes the genera Etheirophora (E. bijubata, E. blepharospora, E. unijubata) and Swampomyces (S. armeniacus and S. triseptatus) (Jones et al.

[17] However, the genera Etheirophora and Swampomyces are not congeneric (belonging to the same genus) and they form a sister clade with Falcocladium species (Falcocladiaceae family, Falcocladiales order) in an unsupported clade in Hypocreomycetidae,[17] order incertae sedis (Maharachchikumbura et al.

[18] Subsequently, Jones et al. in 2015, introduced order Torpedosporales to accommodate the families Etheirophoraceae, Juncigenaceae and Torpedosporaceae.

It is immersed (underwater), oblique or vertical to the host surface, clypeate (covered with a shield-like growth), coriaceous (leather-like, stiff but flexible), ostiolate (having an ostiole, a small hole or opening), periphysate (having short, thread-like filaments that line the opening) and papillate (covered with papillae, small growths).

They have an asci that is 8- spored, unitunicate ('single-walled'), cylindrical to oblong in shape, pedicellate (having a small stalk used to support other structures), J− and persistent.