Definition: In invertebrate zoology, a lateral lobe of the FOREBRAIN in certain ARTHROPODS. In vertebrate zoology, either of the corpora bigemina of non-mammalian VERTEBRATES. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1329)
in invertebrates and non-mammalian vertebrates; do not confuse with optic lobe in humans and other mammals (see SUPERIOR COLLICULI)