Mantodea, Isoptera, and Blattaria are usually combined by entomologists into a higher group called Dictyoptera. Current evidence strongly suggests termites evolved directly from true cockroaches, and some authors now consider termites to be an epifamily of cockroaches (Eggleton et al. 2005), as the Blattaria excluding Isoptera are not a monophyletic group (Grimaldi & Engel 2005).
- Eggleton, Paul, George Beccaloni and Daegan Inward. 2007. Response to Lo et al. Biol. Lett. 3(5):564-565. doi:10.1098/rsbl.2007.0367
- Grimaldi, D. and M. S. Engel. 2005. Evolution of Insects. Cambridge University Press, New York.