| mastotermes | (n) primitive genus of termites; mostly extinct; sometimes considered the most primitive Isoptera, Syn. genus Mastotermes |
| mastotermes darwiniensis | (n) Australian termite; sole living species of Mastotermes; called a living fossil; apparent missing link between cockroaches and termites |
| mastotermes electrodominicus | (n) extinct termite found in amber in the Dominican Republic |
| mastotermes electromexicus | (n) an extinct termite found in amber in southern Mexico |
| Mastotermes | prop. n. A primitive genus of termites, mostly extinct; sometimes considered the most primitive isopterans. |