The Collaborative International Dictionary
Prophragmata
Prophragma \Pro*phrag"ma\, n.; pl. Prophragmata. [NL., fr. Gr. ? before + ?, ?, fence, screen. ] (Zo["o]l.) An internal dorsal chitinous process between the first two divisions of the thorax of insects.
Wiktionary
prophragmata
n. (plural of prophragma English)