metathorax

noun, plural met·a·tho·rax·es, met·a·tho·ra·ces [met-uh–thawr–uh-seez, –thohr-] /ˌmɛt əˈθɔr əˌsiz, -ˈθoʊr-/.

1. the posterior division of the thorax of an insect, bearing the third pair of legs and the second pair of wings.

noun plural -raxes or -races (-rəˌsiːz)

1. the third and last segment of an insect’s thorax, which bears the third pair of walking legs and the second pair of wingsSee also prothorax, mesothorax