the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > thorax > metathorax (6)
the undersurface of the metathorax of an insect; = postpectus, n. 1.
The third, posterior segment of an insect's thorax, bearing the hindwings and hind legs. Cf. mesothorax, n., prothorax, n.