prophragma
/prəʊˈfraɡmə/Zoology
noun
In various arthropods: a partial partition between segments, e.g. between the prothorax and mesothorax of certain beetles.
Origin
Early 19th century; earliest use found in William Kirby (1759–1850), entomologist and naturalist. From scientific Latin prophragma from pro- + ancient Greek ϕράγμα fence, screen.