Phylum Ascomycota Caval.-Sm. (1998) - sac fungi Subphylum Pezizomycotina O.E. Erikss. & Winka (1997) Class Sordariomycetes O.E. Erikss. & Winka (1997) Subclass Hypocreomycetidae O.E. Erikss. & Winka (1997) Order Hypocreales Lindau (1897) Family Cordycipitaceae Kreisel ex G.H. Sung, J.M. Sung, Hywel-Jones & Spatafora (2007) Genus Hyperdermium J.F. White, R.F. Sullivan, Bills & Hywel-Jones (2000)