- proplegmatium
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n.; pl. -ia [Gr. pro, before; plegma, plaited](ARTHROPODA: Insecta)In scarabaeoid larvae, one of two areas with a plicate surface inside, usually in front of a plegmatium; submarginal striae.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.