Mycoparasitic hyperparasites can also be classified based on the part of the host that is infected. For example, many species appear to attack only sclerotia (e.g., Tyrannicordyceps fratricida; Kepler et al., 2012), spores (Olpidium uredinis; Berndt, 2013), or entire sporocarps (e.g., Polycephalomyces spp.; Kepler et al ., 2013).
Fungi categorized as hyperparasites include many mycoparasites, but as mentioned above, other fungi have non-fungal parasites as hosts. These include many animals such as insects and nematodes that are further discussed below. It is likely that there are important physiological and chemical differences among hyperparasites whose hosts belong to different kingdoms of life, and this is yet another way that hyperparasites can be categorized.