noun, plural met·a·tho·rax·es, met·a·tho·ra·ces [met-uh-thawr-uh-seez, -thohr-] /ˌmɛt əˈθɔr əˌsiz, -ˈθoʊr-/.
Examples from the Web for metathorax
The ventral part of this segment is dovetailed into the ventral part of the metathorax and appears to be part of it.Elementary Zoology, Second Edition|Vernon L. Kellogg
Thorax: the scutellum prominent, forming a rounded tubercle, the metathorax elongate and oblique.
The metathorax, or last segment of the thorax, is a little larger still in diameter and protrudes.The Life of the Fly|J. Henri Fabre
The upper side of this is the metathorax, and its lower side the postpectus.An Introduction to Entomology: Vol. III (of 4)|William Kirby
When behind it terminates in a long scutelliform process which covers the Mesothorax, Metathorax, and great part of the Abdomen.An Introduction to Entomology: Vol. IV (of 4)|William Kirby