Coextinction

Coextinction of a species is the loss of a species as a consequence of the extinction of another. The term was originally used in the context of the extinction of parasitic insects following the loss of their specific hosts. The term is now used to describe the subsequent loss of any interacting species, including predators with their prey, and specialist herbivores with their food source. Coextinction is especially common when a keystone species goes extinct.